#1
Numeral
partialRecommended plan: Free (Monitoring)
$0
per year
- · No filings or registrations required — monitoring tier sufficient
- ⚠ As soon as you cross nexus and need to file, you move to Standard at $75/filing.
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Pricing calculator
Move the inputs. We rank all eight providers by what they'd actually cost your business, including the SST states where you have economic nexus only. Estimates use each provider's published pricing, or ranges from real buyer contracts when they don't publish.
Last updated
Estimated annual cost
Cheapest first
#2
Kintsugi
partialRecommended plan: Free
$0
per year
- · No filings or registrations required — Free monitoring tier sufficient
- ⚠ Once you need to file, you move to Starter at $75/filing.
#3
Sphere
transparentRecommended plan: Starter
$0
per year
- · 0 regions (0 US states + 0 international)
- · Flat rate: $100/region/month × 12 months
- · All filings and registrations included in flat fee
- ⚠ No per-transaction fees below 50,000 transactions/month across active regions.
#4
TaxCloud
transparentRecommended plan: Free
$399
per year
- · Plan: Free at $0/mo
- · Annual billing: ~0% discount applied via tier annual rate
- · Filings: up to 12 filings/year tier at $399/yr
- · No SST states selected — pick the SST member states where you have economic nexus only to apply free-filing credit
- ⚠ Filings are priced as a tiered annual subscription (not per-filing × volume). SST CSP credit eliminates the per-filing cost in up to 24 SST member states where the customer has economic nexus only (no physical presence).
#5
TaxJar
transparentRecommended plan: Starter
$419
per year
- · Plan: Starter
- · Order tier: up to 200 orders/mo at $39/mo
- · Annual billing: 10% discount applied
- · 0 billable filings/year at $50 after 2 included credits
- ⚠ Flex fees apply on high-volume months; not modeled in base estimate.
#6
Zamp
opaqueRecommended plan: U.S. Plan
$2,388–$6,291
per year
- · Plan: U.S. Plan (quote-only; range estimated from aggregator buyer data)
- · Buyer segment: startup (revenue $0, 0 states)
- · Bundle includes filings, registrations, notice handling, and US sales tax, with no per-event surcharges.
- ⚠ Zamp does not publish dollar pricing for paid plans. Ranges inferred from aggregator commentary and third-party comparison pages.
#7
Anrok
partialRecommended plan: Starter
$5,988
per year
- · Plan: Starter ($499/mo + 40 bps)
- · Annual subscription: $5,988
- · Transaction fees: $0 × 40 bps = $0
- ⚠ Anrok is SaaS-focused; bps applies to taxable transactions only.
#8
Avalara
opaqueRecommended plan: AvaTax + Returns (custom quote)
$8,233–$19,667
per year
- · Buyer segment: startup (based on $0 annual revenue)
- · AvaTax core: $7,400–$18,000/yr (from YAML order_tiers)
- · Returns (per-filing): 0 × $42–$54
- · Registrations: 0 × $403 (published)
- ⚠ Avalara does not publish list pricing for its core platform. Range is based on Vendr buyer data, checkthat.ai analysis, and customer reviews.
These are estimates from each provider's published pricing, or when they don't publish, ranges from real buyer contracts. Not a quote. Each provider may run current deals or surcharges that shift the math. See methodology for how we rate sources.