How the Russia transport tax calculator is verified
Inputs
| Input | Field | Type |
|---|---|---|
| Мощность (л.с.) | hp | number |
| Роскошь (авто дороже 10 млн ₽ из перечня) | luxury | boolean |
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) |
|---|---|---|
| Ставка (RUB / л.с.) | rate | ($h := hp; $h <= 100 ? 12 : $h <= 125 ? 25 : $h <= 150 ? 35 : $h <= 175 ? 45 : $h <= 200 ? 50 : $h <= 225 ? 65 : $h <= 250 ? 75 : 150) |
| База | base | $round(hp * rate, 2) |
| Годовой налог | tax | $round(luxury ? base * 3 : base, 2) |
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 — C1 Moscow 150 hp
given hp | 150 |
|---|---|
given luxury | no |
expect rate | 35 |
expect tax | 5250 |
Case 2 — C3 300 hp, luxury multiplier
given hp | 300 |
|---|---|
given luxury | yes |
expect rate | 150 |
expect base | 45000 |
expect tax | 135000 |
Sources
- ФНС — калькулятор транспортного налога · checked 2026-08-02
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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