Use this Spain social security calculator to estimate employee and employer contributions under the General Regime (Régimen General). Enter your monthly gross pay, contract type, and payroll assumptions.
Educational estimator only. Official payroll outcomes depend on current legal rates, company CNAE, collective agreements, minimum/maximum bases, reductions, and your exact IRPF situation.
How this Spain social security calculator works
Spain payroll is built around the concept of a contribution base (base de cotización), not just gross salary. If your company pays 14 salaries per year, the extra payments are usually prorated for contribution calculations, which means your monthly base can be higher than the amount shown on a regular payslip.
This calculator follows a practical three-step process:
- Convert annual compensation into a monthly contribution base.
- Apply employee contribution rates to estimate payroll deductions.
- Apply employer rates to estimate company social security cost.
Step 1: Build the contribution base
We estimate annual gross pay as: gross monthly payslip × number of payments. Then we divide by 12 to obtain a monthly base. Finally, we apply minimum and maximum base limits.
Step 2: Employee contribution estimate
Typical employee items include common contingencies, unemployment, training, and MEI. The exact unemployment rate can vary by contract type. The resulting amount is the monthly social security deduction used in the annual estimate.
Step 3: Employer contribution estimate
Employers usually pay a much larger percentage, including common contingencies, unemployment, training, FOGASA, MEI, and accident-at-work premiums. Accident rates are activity-dependent, which is why this field is user-editable.
Reference rates used in this tool (planning assumptions)
To keep this calculator useful for quick planning, we use a straightforward set of rates that are commonly referenced in payroll simulations. Always validate against current official sources before making contractual or budgeting decisions.
| Contribution concept | Employee | Employer |
|---|---|---|
| Common contingencies | 4.70% | 23.60% |
| Unemployment (indefinite) | 1.55% | 5.50% |
| Unemployment (temporary) | 1.60% | 6.70% |
| Vocational training | 0.10% | 0.60% |
| FOGASA | 0.00% | 0.20% |
| MEI | 0.13% | 0.67% |
| Occupational accidents | 0.00% | User input |
Why the same gross salary can produce different net pay
Two employees with the same gross amount may receive different net salaries. Reasons include:
- Different contract types (affecting unemployment rates).
- Different number of payments per year (12 vs 14).
- Different IRPF withholding percentages.
- Different legal base limits and benefit reductions.
- Sector-specific occupational accident rates.
Employee vs employer perspective
From the employee side, the main focus is usually net take-home pay after social security and IRPF. From the employer side, the key metric is total labor cost, which includes gross salary plus employer social security. A good Spain social security calculator should show both views at once, and that is exactly what this page does.
Frequently asked questions
Is this an official Spanish government calculator?
No. It is an educational estimation tool. For legal payroll, use official guidance and your payroll advisor.
Can I use this for autonomous workers (autónomos/RETA)?
Not directly. RETA uses a different contribution logic based on selected/constrained base and income brackets. This page is focused on employee payroll under the General Regime.
Does this include bonuses, overtime, or in-kind compensation?
Not in detail. You can include those amounts in gross salary for rough planning, but final payroll may differ depending on compensation type and exemptions.
How accurate is the net salary estimate?
The social security estimate is typically useful for planning. The net salary estimate can vary more because IRPF depends on personal and family circumstances, region, and annual income structure.
Final note
If you are evaluating a new job offer, budgeting payroll for a new hire, or comparing 12-pay vs 14-pay structures, this Spain social security calculator gives you a strong first-pass estimate in seconds. Use it to ask better questions, then confirm details with official payroll documentation.