Free tools for freelancers and small businesses

01 / Tax

VAT, withholding tax and Spanish Corporate Tax.

3 tools

02 / Self-employed

Contributions and planning for people working for themselves in Spain.

2 tools

2 min Social Security

Self-employed contributions

Estimate your income band, available contribution base and standard RETA payment from your monthly net income. 2 min Plan your income

Self-employed income

Estimate what remains after expenses, Social Security and an income-tax reserve you choose. See how invoice withholding affects available cash.

03 / Employment

Employer costs and contributions for your team.

1 tool

3 min Payroll

Employer cost

Estimate annual and monthly employment costs, including employer contributions, MEI and the 2026 solidarity contribution.

04 / Finance

Pricing, profitability and operating decisions.

2 tools

1 min Profitability

Margin and target price

Calculate margin, markup and profit, or find the price required to achieve your target margin. 1 min Planning

Break-even point

Find how many units you need to sell to cover your costs and when the business starts generating profit.

05 / Business management

Company setup, quotes, collections and business administration.

5 tools

2 min Collections

B2B late-payment interest

Calculate interest on unpaid commercial invoices using the Spanish statutory rate for each half of 2026. 3 min Tax obligations

Spanish tax calendar

Select your obligations and create a practical Spanish tax calendar with filing and direct-debit deadlines. 1 min Intra-EU transactions

VIES VAT validator

Check live whether an EU VAT number is valid in the European Commission’s official VIES service. 2 min Starting a company

Company formation costs

Budget for notary, registry and adviser fees when setting up a Spanish SL. See share capital separately from setup expenses. 3 min Quotes and estimates

Quote generator

Create a quote with your business details, customer, line items and taxes. Download a PDF ready to share, without registration.

06 / Comparison tools

Compare software for your business.

1 tool

A Numonis project

ComparaFactu

Compare invoicing software for freelancers and small businesses in Spain by price, features and plan limits.

Review your results with an expert.

Get help checking your calculations and planning your tax payments, payroll or company setup.

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Free tools for your business.