The refund of the excess is nowadays processed automatically, without you having to claim it. Within RETA you still pick your bracket based only on your self-employment net income, regardless of your salaried job.
In practice, pluriactividad is common among people who start their own project without leaving their job. When you register with RETA you report that situation, and your quota is calculated like any other autónomo's, by income bracket. What changes is that your total contributions may exceed the annual cap, and that is where the refund comes in.
The typical mistake is thinking that, since you already contribute through your employer, you do not need to register as an autónomo. If your self-employed activity is habitual, registration is mandatory, and skipping it can lead to penalties and back contributions with surcharges. Another error is forgetting that your income tax return will add your salary and your business income together, and that the withholding on your payslip may fall short.
It is linked to RETA, the base de cotización, the regularización de cuotas and the self-employed quota. Your self-employed activity needs its own books, invoicing and quarterly forms, separate from your payslip, and kontora prepares them box by box with deadline reminders.
Guides that use this term
- Spain's flat rate for new autónomos in 2026: what you really pay, who qualifies and how long it lasts
- Self-employed social security contributions in Spain 2026: the complete bracket table and how to work out yours
- The autónomo quota increase in 2026: how much it really rises, bracket by bracket
Related terms
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