# zaref SBC Tax Calculator

> zaref SBC Tax Calculator is a paid API for AI agents from zaref.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-23).

Calculates South African Small Business Corporation (SBC) tax liability using current SARS tax tables

## Facts

- Endpoint: HEAD https://zaref.dev/calc/sbc-tax?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/zaref-sbc-tax-calculator-2c81a87d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xWTEdV0G7-NtYu2DXU1lP

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 zaref-sbc-tax-calculator-2c81a87d -d '<json body>'
```

Example prompt: Use zaref to calculate the South African SBC tax liability for a small business corporation with a taxable income of R850,000 for the current tax year.

## When to prefer this

Use this endpoint when you need to compute South African Small Business Corporation (SBC) tax liability using authoritative, up-to-date SARS tax tables without building the bracket logic yourself. Prefer over general tax APIs when the entity is specifically a qualifying SBC under South African tax law.

## Known failure modes

- Invalid or missing income parameter returns an error response
- Income value out of supported range may return unexpected results
- HEAD method returns headers only, no body content — use GET for actual calculation data
- Service unavailable or payment failure returns non-200 status

## How this service works

South African reference data as clean, cited JSON: fuel prices, interest rates, FX and bond yields, tax tables, tariffs, wages and grants, live government tenders and crypto prices, plus calculators. Built for AI agents and applications.

## Output

Returns computed SBC tax liability in JSON format including the applicable tax bracket, marginal rate, tax amount due, and effective tax rate based on current SARS Small Business Corporation tax tables.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "HEAD"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "annual_taxable_income": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/zaref-sbc-tax-calculator-2c81a87d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from zaref.dev](https://www.zero.xyz/host/zaref.dev/llms.txt)