Why does my payslip withhold a different percentage?

Because the company works from your modelo 145 and applies the family-situation reduction we do not model: 3,700 euros for a single earner whose spouse has almost no income, 2,150 for a single parent. Add a mid-year raise, which re-cuts the rate for the remaining months, and the payslip drifts from any annual estimate. This gives the baseline; yours is that baseline plus your form 145.

Does splitting the salary into 14 payments cost me anything?

No. Same annual gross, same tax, same contributions: 14 payments only make each ordinary payslip smaller and hand you two larger ones in June and December. It is a cash-flow choice, not a tax one.

How does this compare with invoicing the same amount as an autónomo?

Badly, if you compare gross with gross. An employee's Social Security is mostly paid by the company on top of the salary; an autónomo pays the whole quota out of the invoice. To compare honestly, run the same figure through our gross-to-net calculator for autónomos and put the two net numbers side by side.

Spain

Spain gross to net salary calculator

Enter the gross salary on the offer and get the payslip: worker Social Security at the 2026 rates, the IRPF withholding, and the net figure per payment. The self-employed version of this question lives in our gross-to-net calculator for autónomos.

The offer

Annual gross salary

€

The figure written in the contract, before anything is taken out.

Payments a year

Contract

Comunidad autónoma

Each region legislates half the income tax scale. Leave it unset and the calculator uses the reference scale, the one every published bracket table quotes.

Your situation

Your age

From 65 the personal minimum rises, and again from 75.

Children under 25

Living with you: each one lowers the withholding through the family minimum.

Ascendants over 65 living with you

Parents or grandparents in your household with income under 8,000 euros.

Recognised disability

Your payslip

Net per payment€1,651.71of 14 a year

Annual net: €23,124
Monthly average: €1,927
Social Security, your share: €1,950
IRPF withheld: €4,926
State half of the tax: €2,463
Regional half of the tax: €2,463
Personal and family minimum: €5,550
Withholding rate: 16.42%
Total taken from gross: 22.9%

Worker contribution rate applied: 6.5%.

Navarra and the Basque Country run their own income taxes, not a regional half of the Spanish one, so they are not in this list.

Estimate

workingfigures.com/spain/nomina-bruto-a-neto

The formula

Net = gross minus worker Social Security minus IRPF. The worker share is 4.70% common contingencies plus 1.55% unemployment (1.60% on a fixed-term contract) plus 0.10% training plus 0.15% MEI, on a base capped at 5,101.20 euros a month. IRPF applies the scale to gross minus contributions, minus the 2,000 euros of other expenses, minus the work-income reduction, and credits the personal and family minimum at the bottom of the scale.

What this assumes

Pick your comunidad and the calculator uses that region's half of the scale (Madrid 45% top marginal, Comunidad Valenciana 53.85%); leave it unset and it falls back to the reference scale everyone quotes. What is not modelled: the withholding algorithm's family-situation reduction (single parents and single-earner couples withhold a little less than this shows), joint filing, regional deductions, and part-year contracts. Rates, minimums and regional scales verified August 2026 against the 2026 contribution order, articles 19, 20 and 57 to 60 of the IRPF law, and each region's enabling law.

FAQ

Why does my payslip withhold a different percentage?: Because the company works from your modelo 145 and applies the family-situation reduction we do not model: 3,700 euros for a single earner whose spouse has almost no income, 2,150 for a single parent. Add a mid-year raise, which re-cuts the rate for the remaining months, and the payslip drifts from any annual estimate. This gives the baseline; yours is that baseline plus your form 145.
Does splitting the salary into 14 payments cost me anything?: No. Same annual gross, same tax, same contributions: 14 payments only make each ordinary payslip smaller and hand you two larger ones in June and December. It is a cash-flow choice, not a tax one.
How does this compare with invoicing the same amount as an autónomo?: Badly, if you compare gross with gross. An employee's Social Security is mostly paid by the company on top of the salary; an autónomo pays the whole quota out of the invoice. To compare honestly, run the same figure through our gross-to-net calculator for autónomos and put the two net numbers side by side.