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Pricing Math – Tax Split
x402
Pricing Math – Tax Split is a paid API for AI agents from pricing-math.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).
Splits a tax-inclusive (gross) price into net and tax amounts, or adds tax to a net price, given a user-supplied tax rate percentage.
Price / call$0.02
Success—
StatusUnknown
How this service works
Split a tax-inclusive price into net and tax, or add tax to a net price, for a sales tax or VAT rate you supply.
Output
Returns netAmount, taxAmount, and grossAmount as numbers, along with the ratePct and mode used, plus a plain-English summary. All monetary values are rounded to standard decimal precision. The response also includes a disclaimer and any degraded/error flags.
Example use cases
E-commerce VAT receipt breakdown
“I have a gross total of €85.00 that already includes VAT at 19% — can you break it down into the net price and the VAT amount separately?”
Adding sales tax to a wholesale quote
“My wholesale net price is $250.00. Add 8.5% sales tax to it and tell me the total gross price and the tax amount I need to charge.”
Accounting reconciliation for mixed-rate receipts
“I need to split a £540 invoice that includes UK standard VAT at 20% — give me the net and the tax so I can post them to the right accounts.”
Technical details
Endpoint
GEThttps://pricing-math.x402tookit.com/tax-split?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, deterministic computation to split a tax-inclusive gross amount into net and tax, or to add a known tax rate to a net price. It requires you to supply the tax rate yourself (no built-in rate lookup), making it ideal when you already know the applicable VAT or sales tax rate and just need the arithmetic done reliably. Prefer this over a full tax-rate-lookup service when you have the rate in hand and only need the math.
Side effects
- Missing required 'amount' or 'ratePct' query parameters returns an error
- Non-numeric or negative values for amount or ratePct may cause validation errors
- Extremely large or small ratePct values (e.g. 0% or >100%) may return unexpected results
- Payment failure ($0.02 USDC) via x402 protocol will block the request
- Invalid 'mode' value (not 'inclusive' or 'exclusive') may default to inclusive or return an error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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