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In this blog post, we wanted to compile the most important dates for 2026 that are particularly relevant for entrepreneurs.

These dates will help you stay on track and take care of important things at the right time. Truster will take care of most of your notifications and payments for you, but it's still a good idea to keep these dates in mind.

Here are the important dates for 2026:

January
7.1. Send Driversnote report
9.1. Respond to the tax return survey
13.1. Last date for submitting monthly VAT returns
23.1. Due date for payment of input tax
February
12.2. Last date for submitting monthly and quarterly VAT returns
24.2. Due date for payment of input tax
28.2. Last day to complete the tax return survey
28.2. Last date for submitting annual VAT returns
March
12.3. Last date for submitting monthly VAT returns
24.3. Due date for payment of input tax
April
1.4. Deadline for filing the tax return for the business name
14.4. Last date for submitting monthly VAT returns
23.4. Due date for payment of input tax
May
12.5. Last date for submitting monthly and quarterly VAT returns
23.5. Due date for payment of input tax
June
12.6. Last date for submitting monthly VAT returns
23.6. Due date for payment of input tax
July
14.7. Last date for submitting monthly VAT returns
23.7. Due date for payment of input tax
August
12.8. Last date for submitting monthly and quarterly VAT returns
25.8. Due date for payment of input tax
September
12.9. Last date for submitting monthly VAT returns
23.9. Due date for payment of input tax
October
13.10. Deadline for the submission of the monthly VAT return by the monthly declarant
23.10. Due date for payment of input tax
November
12.11. Last date for submitting monthly and quarterly VAT returns
24.11. Due date for payment of input tax
December
12.12. Last date for submitting monthly VAT returns
23.12. Due date for payment of input tax

Driver's logbook for a self-employed entrepreneur

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Car price estimate

Read the guide ->

Driversnote report - How to send a report to Truster

Read the guide ->

Private withdrawal in a sole proprietorship – What it is and where to find payment details

Read the guide ->

Does using a substitute affect my taxation?

Read the guide ->

Vehicle taxation

Read the guide ->

How do I add expenses?

Read the guide ->

How does accounting work with Truster?

Read the guide ->

Where can I find my company details?

Read the guide ->

What expenses can I add to my accounts?

Read the guide ->

What does the Pro Light service cost?

Read the guide ->

How does income tax work on Truster Pro Light ?

Read the guide ->

How Truster handles YEL insurance

Read the guide ->

Who has to take out YEL insurance?

Read the guide ->

Payment transactions in Pro Light

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Have you received a request for information from the Immigration Service?

Read the guide ->

Downloadable commission agreement for a sole trader

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How do I subscribe to Truster Pro Light ?

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Creating an invoice

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I already have a business ID, can I use Truster Pro Light ?

Read the guide ->

In which registers will the business name be registered?

Read the guide ->

Company data management

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Suomi.fi - Company mandates

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Suomi.fi - Personal mandates

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Important dates for an entrepreneur

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YEL insurance

Read the guide ->

Business reports for the self-employed entrepreneur

Read the guide ->

How to set up a direct debit

Read the guide ->

Subcontractor: How to share your information with the main user

Read the guide ->

Prepayments in Truster Pro Light

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Receipts and VAT deductions for sole proprietors

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Mileage allowances in 2026

Read the guide ->

I have a substitute, how do I split the bill?

Read the guide ->

Mileage allowances for self-employed persons

Read the guide ->