Self-employed tax calendar for 2026

You can find more information about the models in section 4.1 of our help.

As happens every year, the Tax Agency (AEAT) makes public the calendar with the main deadlines to comply with tax obligations.

However, given that the self-employed have fewer obligations than those included in that general list, in this article we offer you a summary of the 2026 tax calendar applicable to the majority of self-employed people.

Deadlines for submitting self-assessments with direct debit

The deadline for submitting self-assessments with direct debit depends on the submission deadline for each model. If this date falls on a non-business day, the deadline is moved to the first following business day. In that case, the direct debit period is generally extended by the same number of days as the submission period is extended.

In addition, between the end of the deadline for submitting a self-assessment with direct debit payment and the end of the general deadline for submission and voluntary payment of that same self-assessment, there must be at least three business days or five calendar days. For these purposes, Saturdays, Sundays, national holidays and regional or local holidays that affect the municipality where the IT Department of the Tax Agency is located are considered non-business days.

The general deadlines and deadlines with direct debit for each model corresponding to the year 2026 are detailed below.

Here I give you a brief description of the models.

Form 111: quarterly declaration of withholdings of personnel* and professionals (*at the moment, we do not cover cases in which self-employed people have employees)

Form 115: quarterly rental withholding declaration

Form 130: installment payment of Personal Income Tax, income on account of Income

Form 303: quarterly VAT declaration

Form 349: summary declaration of intra-community operations

It is important to mention that the deadline to submit the 2025 Income Tax Return (Form 100) begins in April. At the moment, this model is not available in our application.

Tranquility and control

Complying with the self-employed tax calendar is not just a matter of submitting models on time, but of having the information prepared, organized and reviewed before the deadlines arrive. Carelessness, last-minute rush or lack of control are usually the source of surcharges, sanctions or poorly presented declarations.

With Conta.es you can organize your tax calendar with greater clarity and face each quarter with peace of mind. The application allows you to always have your income and expenses up to date, review your data in advance and arrive at each key date knowing exactly what you have to present.

This way:

• Avoid forgetfulness and late submissions
• You reduce errors due to haste or lack of information
• You gain visibility about your taxes before filing them
• You keep your accounting aligned with the requirements of the Treasury

Keeping control of your tax obligations should not be a constant source of stress. If you are self-employed and want to face the tax calendar with more security and fewer worries, you can start to use Conta.es and manage your activity with order and confidence starting today.