TaxJar and Zamp both manage sales tax compliance, but they work differently. Zamp is a managed service that does the work for you, while TaxJar is a software solution that automates some processes, but requires hands-on management.

TaxJar and Zamp both offer sales tax compliance solutions, but at very different prices.
While Zamp doesn't publish its fees publicly, multiple reports put its entry-level tier at $199 monthly, compared to $39 for TaxJar's Starter solution.
This pricing gap isn't arbitrary—it reflects two very different approaches to sales tax compliance. Zamp is a fully managed service, so you hand off all compliance obligations, while TaxJar offers software solutions that help you manage compliance while still leaving you in control.
Because of these different models, TaxJar is likely the better fit for small to midsize businesses with simple tax situations who prioritize low costs over full-service support, while Zamp is best for companies willing to pay a premium to outsourctheir sales tax obligations.
This Zamp vs. TaxJar comparison will provide more insight into both services so you can decide if either is right for you.
Since TaxJar and Zamp differ in important ways, understanding each company's offerings can help you decide if either is right for you.
Here’s a quick overview of each:
The service model is the most fundamental difference between Zamp and TaxJar.
Zamp charges a premium price to assume full responsibility for all sales tax compliance, while TaxJar offers an affordable solution for companies looking for a platform to manage compliance more easily.
TaxJar's software solution:
While TaxJar helps with all compliance obligations, it is ultimately a software tool that empowers your company to act, but doesn't fully automate the process. Your company still must take a hands-on role, including requesting registrations and importing and exporting data.
Zamp takes many more of these tasks off your plate, providing a fully managed solution. Zamp's team handles everything for you, including:
Although Zamp doesn't offer a virtual mailbox, as a managed solution, it otherwise takes on all compliance tasks for your team. Zamp reviews data, catches discrepancies, files tax forms, and owns the outcome—without requiring you to actively monitor it or push buttons on a dashboard.
These fundamental differences impact both price and the onboarding process. TaxJar charges much less, and its onboarding experience focuses on connecting your stores and learning the platform. Zamp's fees are higher, and onboarding involves a handoff to their compliance team.
Companies with developers and in-house tax teams that just need support may prefer TaxJar's self-service model, as will businesses with simple tax situations and low budgets. Those with more complex needs and bigger budgets may prefer to hand off compliance entirely to Zamp.
Businesses that prefer a middle ground may opt for alternatives like Numeral that don't require a costly managed service subscription to benefit from automated filings or expert review, and don't leave you managing tasks manually.
Numeral autoregisters and autofiles for you without requiring you to request registration; offers you options to review filings, but doesn't require it; and doesn't force you into a long-term commitment. Onboarding is easy, your oversight is optional, and costs are affordable.
[inline-cta title="Let us worry about sales tax." text="The trusted solution for U.S. sales tax, VAT, and GST compliance, used by 3,000+ global businesses. " button="Get started for free" button-link="/get-started"]
Pricing also varies dramatically between Zamp and TaxJar, and both companies have complexities you must understand before you commit.
TaxJar offers two pricing tiers, both of which include 200 orders per month and offer a 10% discount for annual pricing:
State registrations are not included with Starter or Professional and cost $299 per state.
Costs can add up quickly under this credit model. A business filing monthly in 10 states would require 120 credits per year, while a Professional plan would offer four. Your company would pay for the remaining 116 filings out of pocket at a rate of $55 per filing.
The cost of extra filings alone would be $6,380, or $531.67 per month on top of the $99 base fee for a total of around $630.67 per month, not including any registrations, extra orders, or extra integrations.
Zamp's pricing model works differently. You pay a single price that covers calculations, registrations, filings, and support. There is no credit system, no separate filing fees, and no per-state registration charge. This all-in model makes Zamp's pricing more predictable.
However, Zamp does not disclose its prices online. Reports indicate there are different pricing tiers, though, including:
While Zamp's all-in pricing provides more certainty than TaxJar's add-on fees, its managed model is much more expensive. The lack of pricing transparency online also means companies must get custom quotes from sales to understand what Zamp's solutions will cost them.
Companies looking for an alternative that offers a straightforward pricing model will appreciate Numeral's simple fee structure, which is publicly available and requires no subscriptions.
Numeral charges $75 per filing and $150 per registration. This pay-per-use model often costs significantly less than both Zamp's managed service fees and TaxJar's base monthly cost plus overages.
Numeral also offers a free nexus monitoring plan, while neither TaxJar nor Zamp offers a free tier. You don't pay to know where you stand when you turn to Numeral, and there are no unexpected overage charges or monthly commitments to make just to monitor nexus.
To better understand TaxJar vs. Zamp, let's take a deeper dive into each company's features.
Both TaxJar and Zamp offer real-time calculations at the point of sale with rooftop accuracy. However, the process differs, in keeping with each company's business models:
If you want more control over how you integrate your tax calculation tools, TaxJar is the better fit, but be aware of the number of integrations allowed on your plan.
Your company becomes obligated to register with a state and file and remit sales tax once you establish economic or physical nexus. Both TaxJar and Zamp offer nexus tracking, but only for paying customers with active subscriptions.
TaxJar has an Economic Nexus Dashboard that notifies you as you approach state-specific thresholds. It allows you to monitor exposure and recommends next steps when approaching nexus in a new state, but it offers only registration support, not automated registrations.
On the plus side, TaxJar's nexus monitoring platform is well-regarded by users, with one G2 reviewer describing it as "very easy to use and visually clear."
Zamp also monitors nexus as part of its managed service, with the team flagging obligations and handling registrations when a threshold is crossed. This is a far more hands-off approach than TaxJar, which puts the onus on you to react when nexus is reached.
Unfortunately, neither Zamp nor TaxJar offers free nexus monitoring, while Numeral does. Numeral allows businesses to track nexus exposure across all 50 states, so companies can understand their obligations before committing to a filing service.
[inline-cta title="Let us worry about sales tax." text="The trusted solution for U.S. sales tax, VAT, and GST compliance, used by 3,000+ global businesses. " button="Get started for free" button-link="/get-started"]
Both TaxJar and Zamp also file tax forms and remit payments, but again, there are fundamental differences in the process and payment structures.
TaxJar's AutoFile service handles data input, prepares filings based on each state's requirements, and electronically migrates state tax reports to sales tax returns to reduce the risk of human error.
However, TaxJar limits you to two AutoFile credits per year with the starter plan and four autofile credits per year with the Professional plan. Companies with nexus in multiple states or with monthly or quarterly filing requirements will quickly exhaust these credits and incur extra costs.
Zamp's filing and remittance services occur through the managed service, so there's no manual triggering and no credit-based system. The team taking care of your compliance will manage the process.
Numeral also autofiles returns and remits payments, including in home rule states where separate local filing is required. We offer this service for a straightforward price with no long-term commitment. Instead of overages and uncertainty, it's just $75 per filing.
Numeral, TaxJar, and Zamp all guarantee their work, but TaxJar and Numeral's guarantees are more comprehensive.
Numeral covers filing fees or reimburses for late filings, and pays penalties and interest if we file late or make an error resulting in an audit.
Registration in a state is required once your company establishes physical or economic nexus. Zamp handles this task for you, with registrations included in its managed service subscription. This is a major advantage for businesses actively expanding into new areas.
Zamp's subscription-based pricing is based on the number of states you're registered in, though. Adding new states may not be a one-time cost—you may need to move to a higher subscription tier as you expand.
TaxJar also offers registration support for a separate fee of $299, with no registrations included in the Starter or Professional monthly subscription. You must complete registration forms, manually input data, and request TaxJar's help with the process once you're required to register.
Both Zamp and TaxJar offer registrations only for paying customers. But your company retains the option to register directly with state revenue departments at no cost. Unfortunately, this can take time, especially if you have nexus in multiple states and must submit multiple registrations.
Numeral will register your company with no requirement that you maintain an ongoing subscription. The cost is just $150, roughly half of what TaxJar charges, and you pay this fee once when we register you, rather than committing to ongoing charges.
Both TaxJar and Zamp have broad integration libraries, although the depth of TaxJar's native integration with Stripe is a major advantage for companies heavily embedded in Stripe's ecosystem.
Zamp manages integrations for you as part of your managed onboarding process, while TaxJar gives you more control, offering a custom API and the ability to manage integrations from your platform.
TaxJar limits your integrations to 10 with the Professional plan and just three with Starter.
TaxJar Starter plan users are limited to email support. Professional users get access to email and phone support as well as a dedicated customer success manager during onboarding. TaxJar's support plan is self-service by default, and many reviews cite slow response times.

Because Zamp offers a managed model, support is much more hands-on. You have a team actively working on your account, and you can access both phone and email support. Zamp received largely positive customer service reviews from G2 users as well.

Zamp's support model is a meaningful differentiator for companies that want someone accountable for compliance outcomes—not just a software tool and the option to submit tickets when something goes wrong. This top-notch service is reflected in Zamp's higher prices.
TaxJar has some clear advantages over Zamp, including:
Zamp also offers some advantages that make it a better fit for customers who want a hands-off approach or more predictability in monthly costs. Benefits include:
Both Zamp and TaxJar also have some shortcomings that are worth noting when deciding who will help your company manage sales tax compliance:
For many companies, neither TaxJar nor Zamp fits the bill.
TaxJar may be too hands-on, its pricing too unpredictable, or its costs too high due to many overages.
Zamp may be too hands-off, its price may be too high, and its subscription model may limit flexibility.
Numeral provides an alternative to TaxJar and Zamp worth considering in these circumstances, as it is a middle-ground solution that offers more transparency and accountability while still allowing you to hand off burdensome compliance tasks entirely.
Numeral offers:
The flexibility and features Numeral offers make it an excellent fit for all types of businesses looking for a complete compliance solution so they don't have to manage software tools as TaxJar requires, or commit to a costly managed subscription service like Zamp.
To find out if Numeral is right for you, book a demo today.
[inline-cta title="Let us worry about sales tax." text="The trusted solution for U.S. sales tax, VAT, and GST compliance, used by 3,000+ global businesses. " button="Get started for free" button-link="/get-started"]
Still not sure what's best for you? Check out some of our other comparisons:
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