Two systems, one bridge

This is the one page that explains why a “Bosnia & Herzegovina salary calculator” that returns a single number is quietly wrong for half the country. BiH is not one tax system. It is two — the Federation of BiH (FBiH) and Republika Srpska (RS) — each with its own income-tax law, its own personal allowance and its own contribution structure, plus the self-governing Brčko District. The same gross salary therefore produces a different net depending on where you are registered. Two systems, one bridge.

Why two systems at all

The structure is constitutional, not administrative. Under the Dayton framework, income tax and social contributions are set at the entity level, so FBiH and RS each legislate their own rates, allowances and funds. There is no single federal payroll tax that overrides them. For a worker that means the first question is never “how much do I earn” but “under which entity am I employed” — everything else follows from that.

FBiH vs RS, side by side

Two forces pull in opposite directions. RS charges a lower tax rate (8% vs 10%) and gives a much larger basic allowance (1.000,00 KM vs 300,00 KM), both of which favour the worker’s net; the Federation gives a smaller allowance but grows it with your household through statutory coefficients. On the employer side the contrast is starker still: in FBiH the employer pays an extra 5% on top of gross, while in RS the whole 31% is baked into the gross and the employer adds nothing. So “gross” does not even mean the same thing across the bridge.

The itemised detail behind these lines lives on the contributions page and the income-tax page; here the point is simply that they diverge, and by how much. The entity split runs just as deep on the pension side: FBiH and RS each legislate their own pension scheme — see the FBiH old-age pension section for the Federation’s rules (this site does not yet model RS’s).

And the Brčko District?

Brčko is explained here, not calculated. Select FBiH or RS in the calculator above — in Brčko, you follow the fund you are registered with.

The Brčko District is a self-governing unit that does not belong to either entity. Its income tax is a flat rate aligned with the Federation, but the district sets its own, much higher basic personal allowance (14,400 KM per year, i.e. 1,200 KM per month — Brčko Income Tax Act, art. 25), so the same gross yields a different tax in Brčko than in FBiH. For contributions, though, a Brčko worker is registered with either the FBiH or the RS pension and health funds, and the employer applies that fund system accordingly. Because the outcome therefore mirrors whichever entity’s funds you are in, we treat Brčko as an explainer in this version rather than a separate calculator arm — an honest choice, since a made-up third result would be less accurate than pointing you to the fund you actually pay into. The Brčko treatment here is an explainer only; it is not a separate calculation.

What this means for you

If you work in the Federation, pick FBiH and enter your household so the coefficient allowance is applied. If you work in Republika Srpska, pick RS and note the lower rate and larger fixed allowance. If you are in Brčko, pick the entity whose funds you are registered with. Whichever you choose, the figures are drawn from the entity gazettes and tax authorities and cited where they appear — an estimate, not official advice.

The content of this page is being extended over time.