Your national identity document (DNI/NIF).
Proof of other income, if you have it (rent, commissions, interest on accounts, overtime, etc.).
The last 2 bills of your regular payments indicating outstanding balances (mortgages, personal loans, credit cards, alimony and maintenance payments, rent payments, other debts, etc.).
Work history. You can request this through the Social Security website or by calling 901 502 050. If you are employed, submit your last income tax return and your last 2 payslips/pension receipts.
If you are self-employed, you will need the tax return for the last 2 years and the quarterly income tax and VAT payments for the current year.
If you are not a Banco Sabadell customer, we will need a bank statement for the last 6 months from your usual account (pay slips, main bills, etc.).