How the Cyprus self-employed calculator is verified

Inputs

Input	Field	Type
Annual income after expenses (EUR)	`annualIncome`	number

The formula

Each derived value below is computed by the Valem engine from the expression shown, in this order. Nothing else runs — there is no hidden code path.

Derived value	Field	Formula (JSONata)
Social insurance (16.6%)	`socialInsurance`	`$round($min([annualIncome, $const.siCeiling]) * $const.siRate, 2)`
GHS (4%)	`ghsContribution`	`$round($min([annualIncome, $const.ghsCeiling]) * $const.ghsRate, 2)`
Taxable Income	`taxableIncome`	`$round($max([0, annualIncome - socialInsurance - ghsContribution]), 2)`
Income tax	`incomeTax`	`($t := taxableIncome; $round($const.r2 * $max([0, $min([$t, $const.b2]) - $const.free]) + $const.r3 * $max([0, $min([$t, $const.b3]) - $const.b2]) + $const.r4 * $max([0, $min([$t, $const.b4]) - $const.b3]) + $const.r5 * $max([0, $t - $const.b4]), 2))`
Net income / year	`netIncome`	`$round($max([0, annualIncome - socialInsurance - ghsContribution - incomeTax]), 2)`

Rates and thresholds

The expressions above read these as $const. They are the figures the annual refresh replaces, so they live as data rather than being written into the formulas — which is what makes a year-on-year change a one-line diff instead of an edit to arithmetic.

Constant	Value
`siRate`	0.166
`siCeiling`	62868
`ghsRate`	0.04
`ghsCeiling`	180000
`free`	22000
`b2`	32000
`b3`	42000
`b4`	72000
`r2`	0.2
`r3`	0.25
`r4`	0.3
`r5`	0.35

Test vectors (3)

Every case is executed against this model on each build, by the Java engine and independently by a JavaScript one. A mismatch of a single cent fails the build, so the page cannot ship advertising a figure the model no longer produces.

Case 1 — 50,000 EUR income — a typical full-time freelancer

given `annualIncome`	50000
expect `socialInsurance`	8300
expect `ghsContribution`	2000
expect `taxableIncome`	39700
expect `incomeTax`	3925
expect `netIncome`	35775

Case 2 — 20,000 EUR — below the tax-free threshold once contributions come off

given `annualIncome`	20000
expect `socialInsurance`	3320
expect `ghsContribution`	800
expect `taxableIncome`	15880
expect `incomeTax`	0
expect `netIncome`	15880

Case 3 — 100,000 EUR — above the social-insurance ceiling

given `annualIncome`	100000
expect `socialInsurance`	10436.09
expect `ghsContribution`	4000
expect `taxableIncome`	85563.91
expect `incomeTax`	18247.37
expect `netIncome`	67316.54

Sources

Cyprus Social Insurance Services — contributions for self-employed persons · checked 2026-08-22
Cyprus Tax Reform 2026: personal income tax bands and the 22,000 EUR threshold · checked 2026-08-22

Check it yourself — and reuse it

The whole model as JSON — inputs, outputs, formulas, vectors and sources in one re-runnable document.

This model is published under CC BY 4.0: use it, adapt it, build on it, with attribution. The licence covers the model — the expression of each rule and the arrangement of the catalog. The rates and thresholds are law, and nobody licenses those; the sources above are where they come from.

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