How the Georgia small business status calculator is verified

Inputs

InputFieldType
Annual revenue / turnover (GEL)annualRevenuenumber

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 valueFieldFormula (JSONata)
Small-business taxtax$round(annualRevenue <= $const.threshold ? annualRevenue * $const.lowRate : $const.threshold * $const.lowRate + (annualRevenue - $const.threshold) * $const.highRate, 2)
Net income / yearnetIncome$round(annualRevenue - tax, 2)
Effective rateeffectiveRate$round(annualRevenue > 0 ? tax / annualRevenue * 100 : 0, 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.

ConstantValue
lowRate0.01
highRate0.03
threshold500000

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 — 80,000 GEL revenue, well under the 500,000 threshold

given annualRevenue80000
expect tax800
expect netIncome79200
expect effectiveRate1

Case 2 — 600,000 GEL revenue, over the threshold — blended rate

given annualRevenue600000
expect tax8000
expect netIncome592000
expect effectiveRate1.33

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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