How the Bulgaria чиста заплата calculator is verified
Inputs
| Input | Field | Type |
|---|---|---|
| Брутна заплата / месец (EUR) | grossMonthly | 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) |
|---|---|---|
| Ins Base | insBase | grossMonthly < $const.insCeiling ? grossMonthly : $const.insCeiling |
| Осигуровки (13,78%) | insurance | $round(insBase * $const.insRate, 2) |
| Tax Base | taxBase | $round(grossMonthly - insurance, 2) |
| Данък (10%) | tax | $round(taxBase * $const.taxRate, 2) |
| Нето / месец | netMonthly | $round(grossMonthly - insurance - tax, 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 |
|---|---|
insRate | 0.1378 |
insCeiling | 2300 |
taxRate | 0.1 |
Test vectors (2)
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 — S1 1,300 EUR
given grossMonthly | 1300 |
|---|---|
expect insurance | 179.14 |
expect tax | 112.09 |
expect netMonthly | 1008.77 |
Case 2 — S3 3,000 EUR — insurance base capped
given grossMonthly | 3000 |
|---|---|
expect insBase | 2300 |
expect insurance | 316.94 |
expect netMonthly | 2414.75 |
Sources
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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