Numeral support: how to get help and how fast they reply.

This page covers support at Numeral, the sales tax platform, not the payments company of the same name. We cover how to reach support, how fast it says it replies, who deals with the state, the fees around support work, and what G2 reviewers report. Then we compare Numeral's published support with Anrok, Avalara, TaxJar and Zamp (our product). For a review of the whole product, see our Numeral review.

Numeral support compared at a glance

Numeral comes first because it's the subject; the rest are in alphabetical order.

From each vendor's own pages, checked November 6, 2026. "Not stated" means we didn't find it on the pages listed under Sources, so ask the vendor. Other vendors’ G2 ratings as shown on G2 on November 5, 2026; Source: G2.com, Inc. Ratings are for the whole product, not support alone.Sources: Avalara+2AvalaraAvalara support plansavalara.com/us/en/products/support-plans.htmlFirst checked Nov 5, 2026 · Last checked Nov 13, 2026TaxJarTaxJar's customer support service level agreement (SLA)support.taxjar.com/article/1092-taxjars-customerFirst checked Nov 5, 2026 · Last checked Nov 13, 2026G2Zamp Reviewsg2.com/products/zamp/reviews

How to contact Numeral support

Open the chat widget inside your Numeral dashboard. Numeral's help center calls it "the primary and most structured way to submit support requests."

The widget confirms your account, suggests a ticket form and sends the request to the right place. Numeral says it's the only route with a structured intake form. The article about this new ticket system is titled "Support Updates – June 2026" but shows a date of September 15, 2026. So it isn't clear which month the system started.

The other routes:

Numeral recommends a shared team inbox as your account's main contact, because that address gets the notices that need action.

How fast does Numeral support respond?

Numeral says a typical reply takes about 1 business hour, 9am to 5pm Central, Monday to Friday, for chat and email. It calls this typical. It isn't published as a service-level agreement (SLA). For chat it adds: "Up to 2 hours during peak volume or next business morning after hours". So a chat sent at 6pm on a Friday would get its reply on Monday morning.Source: NumeralNumeralSupport Updates – June 2026help.numeral.com/en/articles/15566057-support-upFirst checked Nov 5, 2026 · Last checked Nov 13, 2026

Here is what other vendors publish:

• TaxJar guarantees an email response "within 2 business days" on Starter and "within 1 business day" on Professional (SLA updated September 4, 2025).Source: TaxJarTaxJarTaxJar's customer support service level agreement (SLA)support.taxjar.com/article/1092-taxjars-customerFirst checked Nov 5, 2026 · Last checked Nov 13, 2026
• Avalara lists an "Initial response SLA" of 24 hours on its included Standard support, 8 hours on Priority and 1 hour on Enterprise.Source: AvalaraAvalaraAvalara support plansavalara.com/us/en/products/support-plans.htmlFirst checked Nov 5, 2026 · Last checked Nov 13, 2026
• Anrok's help center says requests get a reply from customer care "usually the same day". Its pricing and FAQ pages state no response time.
• Zamp (our product) publishes no general response time. It commits to "reviewing every notice and starting the response within 2 business days of receipt."Source: ZampZampZamp notice managementzamp.com/feature/notice-managementFirst checked Nov 5, 2026 · Last checked Nov 13, 2026

Numeral's stated time is shorter than the guaranteed times from TaxJar and Avalara's included plan. But only TaxJar and Avalara put their number in a written commitment. In 2025, before the new ticket system, one reviewer wrote that "someone will respond within 1-2 business days". The same reviewer called support "very easy to access with the chat feature" (Joanne C., Accounting Manager, 4.5/5, review on G2, Aug 19, 2025, Incentivized review). Source: G2.com, Inc.Source: G2G2G2 review of Numeral: “Your go-to sales tax filing platform” (Joanne C., 2025-08-19)g2.com/products/numeral-sales-tax-platform-numerChecked Nov 5, 2026

Who handles state letters and notices at Numeral?

Numeral receives your state mail and sorts it by urgency. Whether it also deals with the state depends on which Numeral page you read and who caused the problem.

How notices reach Numeral. Its virtual mailbox "routes mail from tax authorities to a Numeral-managed address instead of your own." Its partner Stable runs the mailbox, and setup needs a notarized USPS Form 1583. Numeral says "Every notice that reaches your virtual mailbox is reviewed and triaged by our team." It handles sales tax mail only. States may still contact you directly, including by phone.

If you decline the mailbox, you share notices through the dashboard widget yourself, and "Numeral is not responsible for penalties resulting from delayed notification."

Who replies to the state. Numeral's pages say different things:

• Help center: "Will Numeral respond to a state on my behalf? Generally no — as with audits, you remain the state's main point of contact for a notice, and we prepare what you need to respond."
• Help center, penalties article: when a notice relates to an issue Numeral caused, "we'll work directly with the state to resolve it."
• Homepage: "We scan, read, and respond to all your sales tax mail from state and local governments."
• Zamp-alternative page: Numeral lists "calling states on your behalf".
• Page for AI assistants, on onboarding: "Numeral communicates directly with state agencies on the client's behalf".

Taken together, the help center's rule seems to be this. Numeral deals with the state when the error is its own. Otherwise, it prepares a response for you to send. Ask Numeral which applies to your account, and get the answer in writing.

Penalties. Numeral covers penalties and interest "caused by our mistake, or by a delay on our side that was outside your control." When the penalty is your fault, "we don't submit waiver requests on your behalf." To keep its on-time guarantee, you must review, approve or reject filings by the end of the 10th. Numeral approves any pending filings itself at 11 PM PST on the 10th that day, unless you've turned on its Auto-Approval Lock setting. With the lock on, nothing is approved until you approve it, and penalties from a late approval are yours.Source: NumeralNumeralFiling at Numeral: everything you need to knowhelp.numeral.com/en/articles/12020866-filing-at-First checked Nov 5, 2026 · Last checked Nov 13, 2026

What reviewers say about mail. One reviewer appreciates "that all the physical mail is handled by Numeral" (4.5/5, review on G2, Sep 17, 2026, Incentivized review). Another objects that Numeral changed the mailing address on their state accounts and locked them out of their logins (0/5, review on G2, Aug 21, 2026). Both describe the same design. Numeral's help center says it becomes the mailing address and the default two-factor contact on accounts you transfer to it. Know that before you sign up. Source: G2.com, Inc.Sources: G2+1G2G2 review of Numeral: “Smooth Integration Enhances Tax Management” (Verified User, 2026-09-17)g2.com/products/numeral-sales-tax-platform-numerChecked Nov 5, 2026G2G2 review of Numeral: “Don't waste your money- trust me!” (Verified User in Accounting, 2026-08-21)g2.com/products/numeral-sales-tax-platform-numerChecked Nov 5, 2026

What Numeral support costs, and other fees

Support itself is included on Numeral's paid plans. The fees to watch are for the work that support tickets often lead to.

Numeral's US fee structure lists three fees for this work. It charges $150 per backfiling, which means filing a return after its deadline has passed. It charges $150 per amendment, and $450 per sales tax account closure. You might close an account when you shut down, or when you no longer have nexus in a state. Numeral charges nothing to deactivate your account or hand your accounts back to you. All of this is on top of $75 per return and $150 per state registration, month-to-month.Sources: Numeral+1NumeralNumeral's US fee structurehelp.numeral.com/en/articles/9655371-numeral-s-uFirst checked Nov 5, 2026 · Last checked Nov 13, 2026NumeralNumeral pricingnumeral.com/pricingChecked Nov 5, 2026

Worked examples, at Numeral's list prices:

• Closing a business registered in 6 states: $2,700 if Numeral closes the accounts ($450 each). Or $0 in Numeral fees if it hands them back and you close each account yourself. The state forms, and any state fees, are then yours.Source: NumeralNumeralNumeral's US fee structurehelp.numeral.com/en/articles/9655371-numeral-s-uFirst checked Nov 5, 2026 · Last checked Nov 13, 2026
• Two missed periods and three amended returns: $750. That's 2 late filings and 3 amendments, at $150 per backfiling and $150 per amendment.
• Paying for a written response time elsewhere: at up to 200 orders a month, TaxJar Professional costs $1,069 a year billed annually ($99 a month on monthly billing). Starter costs $419 a year ($39 a month). Moving up from Starter to Professional costs $650 a year more on annual billing ($720 a year, or $60 a month, on monthly billing). Among other things, Professional shortens the guaranteed email reply from 2 business days to 1, and adds notice management and resolution. Avalara's 24 hours SLA comes with its included Standard support. Priority and Enterprise have no published price.Sources: TaxJar+2TaxJarHow much does TaxJar cost?support.taxjar.com/article/139-how-much-does-taxChecked Nov 5, 2026TaxJarTaxJar pricingtaxjar.com/pricingFirst checked Nov 5, 2026 · Last checked Nov 6, 2026TaxJarTaxJar's customer support service level agreement (SLA)support.taxjar.com/article/1092-taxjars-customerFirst checked Nov 5, 2026 · Last checked Nov 13, 2026

Avalara and TaxJar publish no fee for closing accounts on the pages we checked. Anrok's help center says "Deregistration within a jurisdiction is a service that Anrok does not provide."

Zamp is priced by quote. See Zamp's entry below.

What G2 reviewers say about Numeral support

Numeral's G2 reviews are split on support. About twice as many praise it as criticise it.

Numeral's sales tax product had a G2 rating of 4.1/5 from 43 reviews on Nov 5, 2026. We read all 43. By our hand count, about 21 praise support and 10 criticise it, 5 of them severely (0 to 1.5 stars). All six reviews at 1.5 stars or below were posted between October 2025 and August 2026. (The sixth is about slow processing rather than support.) Since September 1, 2026, 13 of the 15 reviews are Incentivized reviews from Numeral's own invitations. Our Numeral review breaks down the timing.Sources: G2+1G2Numeral reviewsg2.com/products/numeral-sales-tax-platform-numerChecked Nov 5, 2026G2Zamp Reviewsg2.com/products/zamp/reviews

What reviewers like:

• "Their support is also really knowledgeable, and I had a great onboarding experience." (Cody A., Inbound Marketing Specialist, 4/5, Oct 9, 2026)Source: G2G2G2 review of Numeral: “Easy Sales Tax Management with Superb Support” (Cody A., 2026-10-09)g2.com/products/numeral-sales-tax-platform-numerChecked Nov 5, 2026
• "True support and follow through!" (5/5, Sep 25, 2026)Source: G2G2G2 review of Numeral: “First Year with Numeral: True Support and Follow-Through” (Verified User in Sports, 2026-09-25)g2.com/products/numeral-sales-tax-platform-numerChecked Nov 5, 2026
• "the customer service is responsive and helpful" (Alisa B., CEO, 5/5, Aug 7, 2026, Incentivized review)Source: G2G2G2 review of Numeral: “Easy-to-Use Portal with Responsive, Helpful Customer Service” (Alisa B., 2026-08-07)g2.com/products/numeral-sales-tax-platform-numerChecked Nov 5, 2026

What reviewers criticise:

• "You can't speak to a human. They don't address the problems" (0/5, Mid-Market, accounting, Aug 21, 2026)Source: G2G2G2 review of Numeral: “Don't waste your money- trust me!” (Verified User in Accounting, 2026-08-21)g2.com/products/numeral-sales-tax-platform-numerChecked Nov 5, 2026
• "The platform is horrible, and they are non-responsive." (0.5/5, small business, Jul 19, 2026)Source: G2G2G2 review of Numeral: “Persistent Issues and Poor Support Experience” (Verified User, 2026-07-19)g2.com/products/numeral-sales-tax-platform-numerChecked Nov 5, 2026
• "I find customer support unsatisfactory, as they do not adequately address the issues or assist promptly" (Wade G., 1.5/5, Oct 17, 2025)Source: G2G2G2 review of Numeral: “Weak on Support, Probably Okay for Straightforward Sales Tax, But Nothing Somewhat Complex (e.g. bundling)” (Wade G., 2025-10-17)g2.com/products/numeral-sales-tax-platform-numerChecked Nov 5, 2026
• Milder, from a 4-star reviewer: "There have been a few minor hiccups with filings that required some follow-up with customer support, but overall my experience has been positive." (4/5, Oct 19, 2026, Incentivized review)Source: G2G2G2 review of Numeral: “Peace of Mind for Multi-State Sales Tax Compliance” (Verified User in Publishing, 2026-10-19)g2.com/products/numeral-sales-tax-platform-numerChecked Nov 5, 2026

Reviews are on G2; Source: G2.com, Inc.

This is a sample of reviews, not a measurement. The severe reviews run from October 2025 to August 2026. We can't tell whether they came before or after Numeral's new ticket system, because its article is titled June 2026 but dated September 15, 2026. Reviews since September are better, but Numeral invited most of them. So G2 can't yet show whether the change fixed the problems.

Support compared: Numeral, Anrok, Avalara, TaxJar and Zamp

Each entry follows the same format and covers support only. Numeral comes first as the subject; the rest are in alphabetical order.

Numeral

Numeral is a per-return filing service. Support works mainly by chat, and Numeral says a typical reply takes one business hour.

Best for

US sellers with a small number of returns who are happy to work by chat. Numeral charges $75 per return, month-to-month, and says a typical reply takes about 1 business hour.Sources: Numeral+1NumeralNumeral pricingnumeral.com/pricingChecked Nov 5, 2026NumeralSupport Updates – June 2026help.numeral.com/en/articles/15566057-support-upFirst checked Nov 5, 2026 · Last checked Nov 13, 2026

Numeral at a glanceFrom Numeral’s own pages

Channels and response timethe help center lists chat in the dashboard (recommended) and email, plus a CSM "if you have one". Its marketing pages add phone and a dedicated point of contact for filing customers. Typical replies take about 1 business hour, 9am–5pm CST, weekdays.Source: NumeralNumeralSupport Updates – June 2026help.numeral.com/en/articles/15566057-support-upFirst checked Nov 5, 2026 · Last checked Nov 13, 2026

State noticesa virtual mailbox, with Numeral's team sorting notices by urgency. Its help center says Numeral prepares the response and you send it, unless Numeral caused the issue. Its marketing pages say it responds to the mail and calls states for you.

Support-related fees$150 per backfiling or amendment; $450 per account closure. Handing accounts back to you is free.Source: NumeralNumeralNumeral's US fee structurehelp.numeral.com/en/articles/9655371-numeral-s-uFirst checked Nov 5, 2026 · Last checked Nov 13, 2026

What G2 reviewers say4.1/5 from 43 reviews. Both praise and severe complaints appear (see above).Source: G2G2Numeral reviewsg2.com/products/numeral-sales-tax-platform-numerChecked Nov 5, 2026

Not for

teams that want the vendor to be the state's contact on every notice. Its help center says that's usually the customer. Its homepage says Numeral responds to all your sales tax mail.

Watch for

its help center and marketing pages disagree on phone support, a dedicated contact, and who calls the state.

AAnrok

Anrok says its support is US-based and its tax experts review every filing.

Best for

teams that want US-based support and experts checking each filing. Anrok's FAQ says "support is US-based" and that "Anrok's tax experts review every registration and filing."

Anrok at a glanceFrom Anrok’s own pages

Channels and response timea US-based team and a dedicated onboarding team. Requests through its help center get a reply "usually the same day" (not an SLA). The Custom plan adds "priority technical and tax expert support".

State noticesa notices team looks into US sales and use tax (and B&O) notices you send it. Managed mail, on by default for new accounts, gives you a US mailing address. Anrok scans state mail and emails it to you. Anrok doesn't monitor state letters itself, so you forward notices.

Support-related feesStarter is $100 per market per month. No support-plan fee is published, and there's no service for closing accounts.Source: AAnrokAAnrokAnrok pricinganrok.com/pricingFirst checked Nov 5, 2026 · Last checked Nov 13, 2026

What G2 reviewers say4.4/5 from 308 reviews. Of the 30 most recent, about 20 praise support and 4 criticise it. The same Financial Director writes: "The customer service is great, particularly the registration team". Source: G2.com, Inc.Source: G2G2Anrok reviewsg2.com/products/anrok/reviewsChecked Nov 5, 2026

Not for

teams that want the vendor to act on state mail or close accounts for them. Anrok's help center says you're responsible for acting on mail that needs it. It also says deregistration "is a service that Anrok does not provide."

Watch for

one reviewer says Anrok "refused to deregister us" when they closed the company (1.5/5, Oct 27, 2026). Another says you'll still "need to continue to monitor your incoming mail from registered states" (Michael J., Financial Director, 4.5/5, May 15, 2026). Anrok's managed mail may now cover part of that for new US registrations.Sources: G2+1G2G2 review of Anrok: “Barely Any Support When It Came Time to Deregister Everywhere” (Verified User in Computer Software, 2026-10-27)g2.com/products/anrok/reviews/anrok-review-13882Checked Nov 5, 2026G2G2 review of Anrok: “Intuitive Tool That Makes Onboarding Super Easy” (Michael J., 2026-05-15)g2.com/products/anrok/reviews/anrok-review-12818Checked Nov 5, 2026

Avalara

Avalara is the option where you can buy a faster guaranteed reply, at published tiers.

Best for

teams that want a guaranteed reply time in their contract and can pay to shorten it. Avalara publishes first-reply SLAs of 24 hours (included), 8 hours and 1 hour.Source: AvalaraAvalaraAvalara support plansavalara.com/us/en/products/support-plans.htmlFirst checked Nov 5, 2026 · Last checked Nov 13, 2026

Avalara at a glanceFrom Avalara’s own pages

Channels and response timeStandard (included) covers online case submission only. Live chat and phone are on Priority and Enterprise, and a technical account manager on Enterprise. An AI assistant, Avi, is also offered. Standard and Priority run weekdays, 8 a.m.–8 p.m. local; Enterprise runs 24/7.Source: AvalaraAvalaraAvalara support plansavalara.com/us/en/products/support-plans.htmlFirst checked Nov 5, 2026 · Last checked Nov 13, 2026

State noticesCore Compliance includes "Tax notice management". The SST plan adds "Audit liaison support (direct state notice coordination)".

Support-related feesStandard support is included. Priority and Enterprise prices aren't published. The Custom plan (revenue of $50 million+) includes "premium support plans with a 1-hour response SLA".Sources: Avalara+1AvalaraAvalara sales and use tax pricingavalara.com/us/en/products/sales-and-use-tax/priChecked Nov 5, 2026AvalaraAvalara pricing informationavalara.com/us/en/products/pricing.htmlFirst checked Sep 17, 2026 · Last checked Nov 6, 2026

What G2 reviewers say4.1/5 from 940 reviews. We read the 60 most recent. 43 of them are short reviews from one Avalara event campaign on Sep 24, 2026. Of the 60, 15 criticise support and about 4 praise it, while about 21 praise ease of use. "Sometimes it is difficult to get a hold of someone at Avalara to resolve issues" (Alicia L., Controller, 4/5, Nov 2, 2026). Another likes that "Avalara is fairly easy to use" but says tickets can feel "like an AI response until I escalate" (Rachael D., 5/5, Sep 24, 2026, Incentivized review). Source: G2.com, Inc.Sources: G2+1G2G2 review of Avalara: “Seamless State Filings and Fewer Manual Tasks” (Alicia L., 2026-11-02)g2.com/products/avalara/reviews/avalara-review-1Checked Nov 5, 2026G2G2 review of Avalara: “Easy to Use, but support could be better” (Rachael D., 2026-09-24)g2.com/products/avalara/reviews/avalara-review-1Checked Nov 5, 2026

Not for

teams that want to phone or chat with support without paying more. Included Standard support is online cases only. Live chat and phone start at Priority, which has no published price.

Watch for

the faster SLAs cost extra, and their prices aren't public. Its G2 page covers all Avalara products, not only sales tax.

TaxJar

TaxJar publishes a written guarantee for email replies on both plans.

Best for

small sellers who want a guaranteed reply time at a published price. TaxJar's SLA promises a reply within 2 business days on Starter and 1 on Professional. At up to 200 orders a month, Starter costs $419 a year billed annually, or $39 a month. Professional costs $1,069 a year, or $99 a month.Sources: TaxJar+2TaxJarTaxJar's customer support service level agreement (SLA)support.taxjar.com/article/1092-taxjars-customerFirst checked Nov 5, 2026 · Last checked Nov 13, 2026TaxJarHow much does TaxJar cost?support.taxjar.com/article/139-how-much-does-taxChecked Nov 5, 2026TaxJarTaxJar pricingtaxjar.com/pricingFirst checked Nov 5, 2026 · Last checked Nov 6, 2026

TaxJar at a glanceFrom TaxJar’s own pages

Channels and response timeemail on both plans, 8AM–7PM CST. A dedicated Customer Success Manager comes with high Professional tiers (TaxJar's help center says 10,000+ orders in one article and 20K+ in another).Sources: TaxJar+2TaxJarTaxJar's customer support service level agreement (SLA)support.taxjar.com/article/1092-taxjars-customerFirst checked Nov 5, 2026 · Last checked Nov 13, 2026TaxJarHow much does TaxJar cost?support.taxjar.com/article/139-how-much-does-taxChecked Nov 5, 2026TaxJarPricing changes FAQsupport.taxjar.com/article/1227-frequently-askedChecked Nov 5, 2026

State noticesnotice management and resolution is listed on Professional. TaxJar's pages don't say whether it contacts the state.

Support-related feesat the 200-order tier, Professional costs $650 a year more than Starter on annual billing ($60 a month more on monthly billing). Among other things, it shortens the guaranteed reply from 2 business days to 1 and adds notice management and resolution.Source: TaxJarTaxJarTaxJar's customer support service level agreement (SLA)support.taxjar.com/article/1092-taxjars-customerFirst checked Nov 5, 2026 · Last checked Nov 13, 2026

What G2 reviewers say4.7/5 from 264 reviews. We read the 60 most recent. Half of them are from 2021–22, and 58 are labelled Incentivized. About 11 praise support and 7 criticise it. "Easy to use, support is fast and thorough" (Mid-Market software company, 3/5, Aug 14, 2026, Incentivized review). "Technical support is very slow." (Jason S., eCommerce Engineer, 3/5, May 5, 2026, Incentivized review). Source: G2.com, Inc.Sources: G2+1G2G2 review of TaxJar: “Easy to Use with Great Support, but Stripe–TaxJar Reconciliation Is Tricky” (Verified User in Computer Software, 2026-08-14)g2.com/products/taxjar/reviews/taxjar-review-132Checked Nov 5, 2026G2G2 review of TaxJar: “Affordable Tax Compliance, but Slow Support and an Underdeveloped Platform” (Jason S., 2026-05-05)g2.com/products/taxjar/reviews/taxjar-review-127Checked Nov 5, 2026

Not for

anyone who wants to phone support by default. Phone is for Professional subscribers at the 1,000 order tier and up. You request a call-back, and TaxJar returns it within one business day.Source: TaxJarTaxJarHow much does TaxJar cost?support.taxjar.com/article/139-how-much-does-taxChecked Nov 5, 2026

Watch for

TaxJar warns that a return "may be AutoFiled before we are able to respond". So pause the filing while you wait.

Zamp (our product)

Zamp is a managed sales tax service. Its team files your returns and deals with state notices.

Best for

ecommerce brands with no one in-house who owns sales tax. Zamp's notice page says it "answers the state", and Zamp commits to starting every notice response within 2 business days.Source: ZampZampZamp notice managementzamp.com/feature/notice-managementFirst checked Nov 5, 2026 · Last checked Nov 13, 2026

Zamp at a glanceFrom zamp.com

Channels and response timephone ("Speak to a human, right now"), email for questions that aren't urgent, and a dedicated point of contact backed by former state auditors (support, managed service).Sources: Zamp+1ZampZamp supportzamp.com/supportFirst checked Nov 5, 2026 · Last checked Nov 13, 2026ZampZamp managed servicezamp.com/feature/managed-serviceChecked Nov 5, 2026

State noticesZamp "opens the mail, reads it, and answers the state" (notice management). You point your state accounts at Zamp or forward notices.Source: ZampZampZamp notice managementzamp.com/feature/notice-managementFirst checked Nov 5, 2026 · Last checked Nov 13, 2026

Priceby quote. zamp.com doesn't publish a price. Zamp quotes after a 15-minute call about your states and platforms (pricing). Zamp's own line for it is "One price, no surprises" (MoonBrew case study). Notices and support are included (managed service).Sources: Zamp+2ZampZamp pricingzamp.com/pricingChecked Nov 5, 2026ZampMoonBrew customer story ("One price, no surprises")zamp.com/customers/moonbrewFirst checked Nov 5, 2026 · Last checked Nov 13, 2026ZampZamp managed servicezamp.com/feature/managed-serviceChecked Nov 5, 2026

What G2 reviewers say4.8/5 from 58 reviews. About 40 of the 57 we read praise support, and 2 criticise it. "whenever I reply to one I get a capable human right away." (Anika A., VP Operations, 5/5, Oct 30, 2026). The same reviewer also wants "a tighter loop on state notices." Source: G2.com, Inc.Source: G2G2G2 review of Zamp: “A dream to work with as a customer” (Anika A., 2026-10-30)g2.com/products/zamp/reviews/zamp-review-1391986Checked Nov 5, 2026

Not for

teams that need a written response time for general questions. It also doesn't suit filing outside the US and Canada (Zamp's published plans are U.S. and U.S. + Canada).

Watch for

there's no general support SLA. Some reviewers say state mail still reaches them: "the state filing letters are still sent directly to us instead of to Zamp" (Sam C., CEO & Founder, 4.5/5, Oct 15, 2025). Help with closing accounts drew a 0/5 review (May 31, 2026) and a 5/5 one (Jan 22, 2026).Sources: G2+2G2G2 review of Zamp: “CEO & Founder” (Sam C., 2025-10-15)g2.com/products/zamp/reviews/zamp-review-1180904Checked Nov 5, 2026G2G2 review of Zamp: “There is no help with account closures, so good luck doing that yourself.” (Verified User in Marketing and Advertising, 2026-05-31)g2.com/products/zamp/reviews/zamp-review-1289566Checked Nov 5, 2026G2G2 review of Zamp: “Zamp Has Tremendous value and Service” (Mark P., 2026-01-22)g2.com/products/zamp/reviews/zamp-review-1224737Checked Nov 5, 2026

When Zamp isn't the right choice

• You want a written response time for every support question: TaxJar (1 business day on Professional, 2 on Starter) or an Avalara support plan (24 hours included; 8 hours or 1 hour paid). Zamp publishes no general support SLA.Sources: Avalara+1AvalaraAvalara support plansavalara.com/us/en/products/support-plans.htmlFirst checked Nov 5, 2026 · Last checked Nov 13, 2026TaxJarTaxJar's customer support service level agreement (SLA)support.taxjar.com/article/1092-taxjars-customerFirst checked Nov 5, 2026 · Last checked Nov 13, 2026
• You need support around the clock: Avalara Enterprise runs 24/7, with a 1 hour guarantee for the first reply.Source: AvalaraAvalaraAvalara support plansavalara.com/us/en/products/support-plans.htmlFirst checked Nov 5, 2026 · Last checked Nov 13, 2026
• You file a handful of returns a year, want no contract and are happy working by chat: Numeral, at $75 a return. Use the steps below to get faster answers.Source: NumeralNumeralNumeral pricingnumeral.com/pricingChecked Nov 5, 2026
• You want tax experts to review each filing before it goes out: Anrok says its experts review every registration and filing.
• Support reputation matters most to you: G2 reviewers also praise support at Kintsugi and TaxCloud. About 22 of the 30 most recent reviews of each do. We didn't check their support policies for this page.Sources: G2+1G2Kintsugi reviewsg2.com/products/kintsugi/reviewsChecked Nov 5, 2026G2TaxCloud reviewsg2.com/products/taxcloud/reviewsChecked Nov 5, 2026

For the full head-to-head, see Zamp vs Numeral.Source: ZampZampcoveragezamp.com/compare/zamp-vs-numeralFirst checked Nov 6, 2026 · Last checked Nov 13, 2026

If your issue with Numeral isn't resolved

These steps come from Numeral's own help center.

1. Open the ticket in the dashboard chat widget, not by email. It's the only route with a structured intake form. Note the ticket ID.
2. Follow up on the same ticket, from the Tickets tab or by replying to the email thread. Numeral says this keeps the request "linked to the correct case".
3. Give the details up front: state, filing period, notice or invoice ID, amounts and the deadline.
4. Forward penalty notices the day they arrive. Numeral warns that some states allow only 30 or 60 days to request a waiver. It won't file the request when the penalty is your fault.
5. Ask in writing who will contact the state about this notice: you, or Numeral.
6. Approve or reject filings by the end of the 10th. Pending filings are approved automatically that night, unless you've turned on Auto-Approval Lock. With the lock on, nothing files until you approve it, and penalties from a late approval are yours.
7. If you're leaving, Numeral charges nothing to hand your accounts back. Switch at the end of a filing period, and export your filing and notice history. Then update the mailing address and two-factor contact on each state account. Our guide on how to switch from Numeral has the full checklist. The fee details are in our Numeral pricing guide.

Numeral support: FAQs

How do I contact Numeral support?

Use the chat widget in your Numeral dashboard; Numeral calls it the primary route. You can also email help@numeralhq.com, which creates a ticket without an intake form. If you have a CSM, they stay your strategic contact.

What is Numeral's support response time?

Numeral's help center says a typical reply takes about 1 business hour, 9am to 5pm Central, Monday to Friday, for chat and email. For chat, it allows up to 2 hours at busy times and the next business morning after hours. It's described as typical, not as a guaranteed SLA.Source: NumeralNumeralSupport Updates – June 2026help.numeral.com/en/articles/15566057-support-upFirst checked Nov 5, 2026 · Last checked Nov 13, 2026

Does Numeral have phone support?

Numeral's marketing pages say yes. Its Kintsugi-alternative page offers support "via chat, email, or phone to all customers who file with us". Its Anrok- and Zamp-alternative pages also list phone. Its help-center support article lists only chat and email. Ask Numeral to confirm phone access for your account in writing.

Does Numeral respond to state notices for me?

Numeral receives notices through its virtual mailbox and sorts them by urgency. Its help center says it usually doesn't respond to the state for you. You stay the main contact, and Numeral prepares the response. When Numeral caused the issue, it says it works with the state directly. Its homepage says it responds to all sales tax mail.

Does Numeral charge extra for support?

Support is included on Numeral's paid plans. Related work has published fees: $150 per backfiling, $150 per amendment and $450 per account closure. Handing your accounts back costs nothing. Filing is $75 per return and registration $150 per state.Sources: Numeral+1NumeralNumeral's US fee structurehelp.numeral.com/en/articles/9655371-numeral-s-uFirst checked Nov 5, 2026 · Last checked Nov 13, 2026NumeralNumeral pricingnumeral.com/pricingChecked Nov 5, 2026

Who pays penalties if Numeral makes a mistake?

Numeral says it covers penalties and interest caused by its mistake, or by a delay on its side outside your control. It also requests the waiver for you. Penalties are yours if, for example, you reject a filing after the 10th or pass on a notice late. Numeral doesn't file waiver requests for those.

Has Numeral's support improved in 2026?

Numeral describes a new ticket system in a help article titled "Support Updates – June 2026" and dated September 15, 2026, so the launch month isn't clear. All 15 G2 reviews posted since September 1, 2026 rate it 4 or 5 stars. But 13 are Incentivized reviews from Numeral's own invitations. The severe complaints date from October 2025 to August 2026.

Which sales tax providers publish a support SLA?

Of the five on this page, TaxJar does (email reply within 2 business days on Starter, 1 on Professional). So does Avalara (24 hours included; 8 hours or 1 hour on paid plans). Numeral publishes a typical time. Zamp publishes a commitment for notices, not a general support SLA. Anrok's help center says requests usually get a reply the same day, which isn't an SLA.Sources: Avalara+1AvalaraAvalara support plansavalara.com/us/en/products/support-plans.htmlFirst checked Nov 5, 2026 · Last checked Nov 13, 2026TaxJarTaxJar's customer support service level agreement (SLA)support.taxjar.com/article/1092-taxjars-customerFirst checked Nov 5, 2026 · Last checked Nov 13, 2026

How we compared

Every support fact comes from the vendor's own pages, checked on November 6, 2026 and listed below. Where a vendor doesn't publish something, we say so rather than guess. G2 ratings are as shown on G2 on November 5, 2026. Review counts are our own hand count of the reviews we read. We read all 43 of Numeral's, all 57 of Zamp's that G2 displays, and the 30 or 60 most recent for the others. The samples differ in size, date and mix of incentivized reviews, so treat them as a rough guide. Zamp facts come from zamp.com and are attributed to Zamp, alongside G2 reviews of Zamp. Zamp's price is a quote, so it isn't in the cost examples. We recheck monthly.