---
title: "Self-Employment Tax Calculator"
method: GET
path: "/api/calc/self-employment-tax-calculator"
tags: ["Finance"]
---

# Self-Employment Tax Calculator

`GET /api/calc/self-employment-tax-calculator`

## Request

- Base URL: `https://calcbright.com`
- URL: `https://calcbright.com/api/calc/self-employment-tax-calculator`
- Auth: none declared

1099 income? See the 15.3% SE tax on 92.35% of your profit, the half-SE deduction, 2026 federal income tax and what each quarterly estimated payment should be.

## Query parameters

- `profit` number: Net self-employment profit Schedule C income minus business expenses (1099 income after expenses).
- `filing` 'single' | 'married' | 'hoh' | 'mfs': Filing status
- `qbi` 'yes' | 'no': 20% QBI deduction (Section 199A)
- `wages` number: W-2 wages (yours) Wages already subject to Social Security reduce the SE wage base.
- `other` number: Other taxable income Spouse's wages if filing jointly, interest, etc.
- `withheld` number: Federal tax already withheld From W-2 paychecks – reduces the estimated payments you need to make.

## Response `200`

Calculation result

- CalcOutput
  - `ok` boolean
  - `tool` string
  - `name` string
  - `url` string: Open this link to see the full calculation
  - `inputs` object
  - `summary` string: Plain-text answer
  - `details` string
  - `result` object
  - `errors` object

## Other responses

- `400`: Invalid input (see errors)

---

[API](https://skmtc.dev/calcbright/apis/calcbright-calculator-api.md) · [All operations](https://skmtc.dev/calcbright/apis/calcbright-calculator-api/llms.txt) · [OpenAPI document](https://skmtc.dev/calcbright/apis/calcbright-calculator-api/revisions/f58229e56e58?raw)