Gross salary is not a comparable number
Two job offers in two countries quote a gross annual figure. They are not measuring the same thing. One may exclude employer contributions that the other includes. One may be paid in twelve instalments and the other in fourteen. One may be quoted before a mandatory pension deduction and the other after it. One country may tax the individual, another the household. Comparing the two headline numbers tells you almost nothing.
This article deals only with the conversion problem: how to get from a quoted salary to money in the bank, in a way that is consistent across jurisdictions. It does not deal with what that money buys, which is a separate exercise.
The four rung ladder
Every payroll system in the world can be described with four levels. Name them explicitly and you stop comparing different rungs by accident.
- Total employment cost. What the employer spends. Gross pay plus employer social contributions, payroll levies, mandatory insurance and any statutory bonus provision.
- Gross pay. The contractual figure, before employee deductions.
- Taxable base. Gross pay minus deductible employee social contributions, personal allowances, work expense deductions and any pre tax pension.
- Net pay. Gross minus employee social contributions and income tax, including any local, municipal, regional or church tax layered on top of the national tax.
A fifth level is worth adding for relocation decisions: net pay minus costs that are mandatory in one country and optional or state funded in another, most commonly health insurance, pension top ups and compulsory vehicle or liability cover.
How progressive systems actually compute tax
Almost all income tax systems are marginal band systems. Income is sliced, and each slice is taxed at its own rate. The rate on your top slice is your marginal rate. The tax you pay divided by your income is your effective rate, and it is always lower than the marginal rate in a progressive system. Confusing the two produces wildly wrong estimates. Social contributions often behave differently again, sometimes flat, sometimes capped above a ceiling, sometimes with a floor.
An illustrative worked example
The following rates and thresholds are invented for the sake of the arithmetic. They do not describe any real country. Suppose in hypothetical Country A gross pay is 60,000, employer contributions are 20 percent on top, employee social contributions are 12 percent of gross, there is a personal allowance of 8,000, and income tax runs at 20 percent on the first 20,000 of taxable income and 35 percent above that.
- Total employment cost: 60,000 plus 20 percent, which is 72,000.
- Employee social contributions: 12 percent of 60,000, which is 7,200.
- Taxable income: 60,000 minus 7,200 minus 8,000, which is 44,800.
- Tax: 20 percent of 20,000 is 4,000. 35 percent of the remaining 24,800 is 8,680. Total tax is 12,680.
- Net pay: 60,000 minus 7,200 minus 12,680, which is 40,120. That is about 3,343 per month.
- Effective deduction rate: 19,880 divided by 60,000, which is about 33.1 percent. The marginal rate on the top slice, including social contributions, is far higher.
Now suppose hypothetical Country B offers 55,000 gross with a combined deduction rate of 22 percent. Net pay is 42,900, which is higher than the 40,120 from the larger gross offer. The lower headline salary delivers more spendable income.
| Rung | Country A (illustrative) | Country B (illustrative) | Why it differs |
|---|---|---|---|
| Total employment cost | 72,000 | Not quoted | Employer contribution rates and ceilings |
| Gross pay | 60,000 | 55,000 | The only figure usually advertised |
| Employee social contributions | 7,200 | Included in the 22 percent | Pension, health, unemployment, care |
| Income tax | 12,680 | Included in the 22 percent | Bands, allowances, local surcharges |
| Net annual pay | 40,120 | 42,900 | |
| Net monthly pay | About 3,343 | 3,575 | Assumes twelve equal payments |
| Effective deduction rate | About 33.1 percent | 22 percent |
Eight things that quietly break the comparison
- Payment frequency. Some countries pay thirteen or fourteen monthly instalments. Annualise before comparing monthly figures.
- Household basis. Joint filing, family quotients and spouse allowances can change the answer for a couple entirely. A single person calculation is not transferable to a family.
- Contribution ceilings. Where social contributions stop at a ceiling, the effective deduction rate falls as salary rises. Where they do not, it keeps climbing.
- Local taxes. Municipal or regional income tax can differ between two cities in the same country.
- Benefits in kind. Company cars, housing allowances, meal vouchers and health cover may be taxable, partially taxable or exempt.
- Tax residency and treaties. Arrival part way through a year, split year treatment, inbound expatriate regimes and double tax treaties can all change the first year materially.
- Mandatory versus optional pension. Money that goes into a pension is deferred, not lost. Treat it as saving, not as tax, but recognise you cannot spend it now.
- Currency. Convert at a stated mid market rate on a stated date, and say which date you used.
How to get authoritative numbers
Most tax authorities publish an official net pay calculator or at least the current bands, allowances and contribution rates. Use those, not third party summaries that may be out of date. For an actual offer, ask the employer for a sample pay slip at the proposed salary, which is the most reliable single document you can obtain. Rules, rates and thresholds vary by country and change frequently, so confirm everything with the relevant tax authority or a qualified tax professional before making a decision.
We deliberately avoid publishing country tax rates that would be stale within a year. The ladder above is stable, and we would rather you apply it to numbers you have verified yourself. This article is informational only and is not personalised tax or financial advice.
How to Use This Guide
Every worked example on this page is illustrative. The figures are chosen to show how the calculation behaves, not to report current market rates. Costs, tax rules and eligibility criteria differ by country and change over time, so take the method from this page and put your own current figures into it. Browse the rest of our guides, or see how we source and check our comparison figures on the about page.
Information only. This article explains how costs and rules are structured. It is not financial, tax, legal or immigration advice, and it is not a recommendation to buy any property, vehicle or investment. Confirm anything that affects a decision with the relevant local authority or a qualified professional before you act on it.
Last updated: August 14, 2026