# Bot Bazaar Self-Employment & Quarterly Estimated Tax Calculator

> Bot Bazaar Self-Employment & Quarterly Estimated Tax Calculator is a paid API for AI agents from bot-bazaar.fly.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-31).

Estimates self-employment tax (15.3%) and calculates quarterly IRS safe-harbor estimated tax installments from projected Schedule C net profit.

## Facts

- Endpoint: GET https://bot-bazaar.fly.dev/v1/x402/quarterly-estimated-tax?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bot-bazaar-self-employment-quarterly-estimated-tax-calculator-0d52c093
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zBjNKgpU9hET7BkeAGFHB

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 bot-bazaar-self-employment-quarterly-estimated-tax-calculator-0d52c093
```

Example prompt: I'm a freelancer expecting to make $95,000 net profit this year on Schedule C — can you calculate my self-employment tax and tell me how much I should pay each quarter as IRS safe-harbor estimated payments?

## When to prefer this

Use this endpoint when you need a quick, reliable computation of self-employment tax liability and quarterly IRS safe-harbor installments for a sole proprietor or freelancer with known or projected Schedule C net income. Prefer this over a general tax API when the user is specifically a self-employed individual or independent contractor needing SE tax (15.3%) and quarterly payment planning, not a W-2 employee or corporate entity.

## Known failure modes

- Missing required projected_net_schedule_c_usd parameter returns a validation error
- Non-numeric or negative income values may produce unexpected results or errors
- Payment failure (402) if USDC balance is insufficient for the $0.01 per-call fee
- Estimates do not account for deductions beyond the SE tax deduction, so results are approximations

## How this service works

Estimate Self-Employment tax (15.3%) and quarterly IRS safe-harbor estimated tax installments.

## Output

Returns the estimated self-employment tax (15.3% on net earnings) broken down by component (Social Security and Medicare portions), plus the four quarterly IRS safe-harbor estimated tax installment amounts derived from the projected Schedule C net profit.

## 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": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "projected_net_schedule_c_usd": {
       "type": "string",
       "description": "Projected annual Schedule C net profit in USD"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bot-bazaar-self-employment-quarterly-estimated-tax-calculator-0d52c093/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bot-bazaar.fly.dev](https://www.zero.xyz/host/bot-bazaar.fly.dev/llms.txt)