Sales Tax Pricing IndexA sourced comparison

Pricing comparison

Kintsugi vs Sphere pricing

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How does Kintsugi pricing compare to Sphere? Kintsugi's Starter has no monthly subscription fee; Sphere's Starter is $100/month ($1,200/year). At the entry tier, Kintsugi is the cheaper option. Kintsugi charges per-state filing fees; Sphere does not.

Kintsugi vs Sphere: typical pricing

Annual cost for two common ecommerce profiles. Both assume Shopify, monthly filing cadence, annual billing, and a typical $120 AOV. Run the calculator to plug in your own numbers.

SMB

50K orders · 120 filings · 10 states · 5 SST · Shopify

Kintsugi

Starter

$9,000

Sphere

Starter

$12,000

Mid-Market

250K orders · 200 filings · 20 states · 10 SST · Shopify

Kintsugi

Starter

$15,000

Sphere

Starter

$24,000

Side by side

DimensionKintsugiSphere
Entry-tier subscriptionStarter: no monthly fee (per-event pricing)Starter: $100/mo · $1,200/yr
Per-state filing fee$75 / filingNone
Per-state registration fee$75 / registrationNone
Per-transaction feeNoneCharged, rate not published
Pricing transparencyPartialTransparent
SST Certified Service ProviderNoNo
International VAT / GSTYesYes

About

Kintsugi

Mid-market ecommerce and SaaS; AI-first positioning attracts technically-oriented finance teams; strong fit for Shopify, Stripe, Chargebee, QuickBooks, BigCommerce

Full Kintsugi pricing breakdown →

About

Sphere

Fast-growing SaaS and digital businesses with global customers; strong fit for AI-native companies like Lovable, Replit, ElevenLabs, Runway AI

Full Sphere pricing breakdown →

Frequently asked questions

How does Kintsugi pricing compare to Sphere?
How does Kintsugi pricing compare to Sphere? Kintsugi's Starter has no monthly subscription fee; Sphere's Starter is $100/month ($1,200/year). At the entry tier, Kintsugi is the cheaper option. Kintsugi charges per-state filing fees; Sphere does not.
Which is cheaper, Kintsugi or Sphere?
Kintsugi at the entry tier, $0/mo vs. $100/mo. But the entry-tier price isn't the whole picture: per-filing fees, transaction fees, and registration costs all shift the math. Run the calculator with your real numbers to see which adds up to less for your business.
Are Kintsugi or Sphere SST certified?
Neither. Without SST certification, you'll pay full per-filing fees in every state, including the 24 SST member states.
Do Kintsugi and Sphere both support international VAT and GST?
Yes. Both extend beyond US sales tax. Kintsugi covers multiple countries; Sphere covers 100.
Does Kintsugi or Sphere charge per filing?
Kintsugi does ($75/filing). Sphere doesn't; its subscription includes filings, so cost scales with volume instead.
Who is each one built for?
Kintsugi targets Mid-market ecommerce and SaaS; AI-first positioning attracts technically-oriented finance teams; strong fit for Shopify, Stripe, Chargebee, QuickBooks, BigCommerce. Sphere targets Fast-growing SaaS and digital businesses with global customers; strong fit for AI-native companies like Lovable, Replit, ElevenLabs, Runway AI. The fit question matters more than the price one. Buy the product that actually covers your situation.
Is Kintsugi or Sphere more transparent on pricing?
Sphere is transparent on pricing; Kintsugi is partial. Translation: you can find Sphere's real prices without a sales call; Kintsugi requires more back-and-forth with their sales team to get a number you can budget around.

Want a number specific to your business? The calculator ranks all eight providers, including Kintsugi and Sphere, by what they'd actually cost given your volume, state footprint, and SST eligibility.