# FOP Tax Calculator – Annual Income Limit Checker

> FOP Tax Calculator – Annual Income Limit Checker is a paid API for AI agents from fop-tax-calculator2.onrender.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Checks whether a Ukrainian sole proprietor (FOP) has exceeded or is approaching the annual income limit for their tax group.

## Facts

- Endpoint: POST https://fop-tax-calculator2.onrender.com/sse
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fop-tax-calculator-annual-income-limit-checker-95f5b6de
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YNxIQYutV61IrUEHeu66o

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability fop-tax-calculator-annual-income-limit-checker-95f5b6de -d '<json body>'
```

Example prompt: Check if my FOP (sole proprietor) in tax group 2 has exceeded the annual income limit — my total income for the year so far is 1,200,000 UAH.

## When to prefer this

Use this endpoint when you need to programmatically verify whether a Ukrainian sole proprietor (FOP) is within or has exceeded their simplified tax group's annual income ceiling — particularly useful for accounting agents, tax compliance workflows, or freelancer finance tools targeting the Ukrainian market.

## Known failure modes

- Missing or invalid FOP group identifier causes validation error
- Income amount not provided or in wrong format returns error
- Unknown tax group returns not-found or invalid-group error
- Service unavailable or cold-start delay on render.com free tier

## How this service works

Check whether a FOP has exceeded (or is approaching) the annual income limit for their group. Paid: $0.02.

## Output

Returns whether the FOP has exceeded the annual income limit for their tax group, whether they are approaching it, and potentially the remaining allowable income before the limit is reached.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fop-tax-calculator-annual-income-limit-checker-95f5b6de/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fop-tax-calculator2.onrender.com](https://www.zero.xyz/host/fop-tax-calculator2.onrender.com/llms.txt)