Svensk Skatte-API — /demo live, zero auth, 4 calculations in your terminal

svensk-skatt-api-demo.md

Svensk Skatte-API — /demo live, zero auth, 4 calculations in your terminal

Sweden's first open tax API is live. No API keys needed to test.

curl https://skatteapi.gracestack.se/demo

You get four sample calculations directly in the JSON response:

Calculation	Input	Result
ISK tax	500 000 kr portfolio	5 250 kr/year
VAT 25%	1 000 kr	250 kr
Income tax	50 000 kr/month	Progressive table
Employer fee	40 000 kr	12 568 kr

Each with embedded curl examples so you can copy-paste directly.

Two tiers

• Free: 30 req/min, /demo + /health + basic endpoints. Demo key: skatt_demo_free_2026
• Pro: 99 kr/month, 300 req/min, all 13 endpoints, X-API-Key auth
• Pro Payment Link: https://buy.stripe.com/14A8wOcnjabte8W3pq0sV2f

Quick start

curl https://skatteapi.gracestack.se/demo | python3 -m json.tool

Endpoints

Endpoint	Description
GET /demo	4 sample calculations, no auth
GET /health	API status
GET /isk/{capital}	ISK schablonskatt
GET /moms/{amount}?rate=25	VAT add/remove/extract
GET /inkomstskatt/{monthly_salary}	Progressive income tax
GET /arbetsgivaravgift/{salary}	Employer fee 31.42%
GET /kapitalvinst/{profit}	Capital gains tax 30%
+7 more (see /demo for full list)

Open source

MIT licensed: github.com/cedendahlkim/svensk-skatt-api

Built for developers building Swedish fintech apps, accounting systems, payroll software — or anyone tired of implementing Swedish tax calculations from scratch.

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Try /demo now — no signup, no key, just Swedish tax math in your terminal.

More Gracestack tools: Skattefällan · ISK-Skattekollen · Räntechocken · Skatteåterbäringen · Verktygslådan