| name | laun |
| description | Icelandic take-home salary calculator (payday.is) — tax and pension breakdown. |
Payday.is Salary Calculator (Laun)
Icelandic take-home salary calculator via payday.is public API.
API
- Endpoint:
POST https://payday.is/is/ajax/calculator/calculateSalary/
- Auth: None (public XHR, requires
X-Requested-With: XMLHttpRequest)
- Format: JSON request/response
Input Modes
- Gross salary — set
Salary, leave TotalCost null
- Employer total cost — set
TotalCost, leave Salary null
2025 Default Rates
| Parameter | Default | Description |
|---|
| PensionContributionEmployeePercentage | 4.00% | Mandatory employee pension |
| PensionContributionEmployerPercentage | 11.50% | Mandatory employer pension |
| RehabilitationFundPercentage | 0.10% | Starfsendurhæfingarsjóður |
| IncomeTaxStep1Percentage | 31.49% | Up to ~446,136/mo |
| IncomeTaxStep2Percentage | 37.99% | 446,136–1,252,501/mo |
| IncomeTaxStep3Percentage | 46.29% | Above 1,252,501/mo |
| InsuranceFeePercentage | 6.35% | Tryggingagjald (employer) |
| PersonalTaxAllowancePercentage | 100% | Persónuafsláttur (72,492 kr/mo in 2025) |
Usage
uv run python scripts/laun.py 1000000
uv run python scripts/laun.py 1200000 --total-cost
uv run python scripts/laun.py 750000 --union 1.1
uv run python scripts/laun.py 1000000 --json
uv run python scripts/laun.py 1000000 --additional-pension 4.0
Response Fields
Key fields in the JSON response data:
salary — gross monthly salary
totalCost — total employer cost
payoutAmountSalary — take-home pay
incomeTaxEmployeeTotalAmount — total income tax
pensionContributionEmployeeTotalAmount — employee pension
personalTaxAllowanceAmount — tax credit applied
Caveats
- Tax rates change yearly — defaults are 2025 rates baked into payday.is
- Union fee varies by union (typically 0.7–1.25%)
- Does not account for benefits in kind, car allowance, etc.
- Personal tax allowance is per-person; couples can transfer unused allowance via
SpouseTaxAllowancePercentage