Journal
03 · From document to quarter
Accounting
How to organise ledgers, evidence and closing routines for clean accounting.
Tax0
IVA for autónomos and Modelo 303: practical guide
How output and input IVA work, what Modelo 303 reports and what to review before the quarterly close.
Tax0
IRPF for autónomos and Modelo 130: instalment payments
Who usually files Modelo 130 and how income, expenses, withholding and the annual income-tax return connect.
Expenses0
Deductible expenses for autónomos: rules and examples
When a cost reduces IRPF, which documents to retain and why IVA and IRPF deduction rules are not identical.
Invoicing0
Autónomo invoices: required details, numbering and IVA
Mandatory fields for a full invoice, series and numbering, IVA, IRPF withholding and special wording.
Tax0
Autónomo tax calendar: what to control each quarter
A practical system for IVA, IRPF, withholding, EU operations and annual reporting without relying on memory.
Expenses0
Depreciation for autónomos: computers, equipment and furniture
When a durable purchase becomes a fixed asset, how depreciation works and which evidence to retain.