- Registration, data modification or deeregistration at the Exchequer/Tax Office

- Income Tax (IRPF)

- Corporation Tax(IS)

- Value-added Tax (IVA)

- Managements of quarter tax payments

- Deductions: rental, employees and professional workers

- Tax on property transfers (ITP)

- Taxes on gifts and inheritances

- Advisement in tax inspections

- Tax Office management and deferments