Have you ever panicked on realizing that an important tax return deadline had already passed? Or paid a hefty late payment fee because you forgot the value added tax (VAT) due date? You are not alone — as many as 40% of Finnish entrepreneurs admit to having forgotten a financial management deadline in the past year.

An entrepreneur's everyday life is full of deadlines, and financial management deadlines are among the most important of them. The year 2025 brings familiar obligations and a few changes that every entrepreneur should mark in their calendar. In this comprehensive guide, we go through all the most important financial management dates of 2025 and give tips on how you can automate a large share of these obligations with Tilit AI.

Why is a financial calendar essential for entrepreneurs?

A financial calendar is an entrepreneur's best friend, helping you anticipate and schedule the due dates of all mandatory filings and payments. A well-planned financial calendar ensures that:

You avoid late payment fees and penalty interest, which can add up to hundreds of euros
You maintain a good image as a payer and as a company in the eyes of authorities and partners
You free up your time for your core business instead of putting out sudden financial management "fires"
You enable sensible tax planning through timely measures

According to a recent survey of entrepreneurs, entrepreneurs who practice proactive financial management save an average of 5–7 hours a month — that's a whole working day you can use to develop your business! Cash flow management is one of the most important areas of financial management, and it benefits significantly from a well-planned financial calendar.

The most important dates of 2025 by month

January 2025: Start of the year and annual returns

January 12, 2025 (Mon) — Employer reports for December 2024 (TyEL, the Finnish employees' pension insurance, and unemployment insurance contributions)
January 20, 2025 (Tue) — Payment date for December 2024 VAT and employer contributions
January 31, 2025 (Fri) — Annual information returns to the Finnish Tax Administration (Vero) for salaries, dividends and other payments

Entrepreneur tip: January is a critical month in which it's worth checking that the previous year's bookkeeping is up to date and that all vouchers have been delivered to your accountant. Tilit AI's automatic voucher archive ensures that all documents are in order and easy to find. If you own a limited liability company (Oy), January is also a good time to consider how to optimize the balance between your salary and dividends for the coming year.

February 2025: Annual reports to insurance companies

February 12, 2025 (Wed) — Employer reports for January
February 20, 2025 (Thu) — Payment date for January VAT and employer contributions
February 28, 2025 (Fri) — Annual reports to insurance companies (accident and group life insurance)

Entrepreneur tip: In February, it's worth checking whether your company's insurance coverage and your earned income under YEL (the Finnish self-employed persons' pension insurance) are up to date. The correct YEL earned income directly affects your social security, and an earned income that is too low can backfire if you fall ill or become unemployed. Modern AI-assisted financial management makes it easier to track and optimize insurance premiums.

March 2025: Financial statements and tax return time for sole proprietorships

March 12, 2025 (Wed) — Employer reports for February
March 20, 2025 (Thu) — Payment date for February VAT and employer contributions
March 31, 2025 (Mon) — Deadline for filing financial statements and tax returns (sole proprietorships whose financial year ended on December 31, 2024)

Entrepreneur tip: If you operate as a sole proprietorship (toiminimi), March is a critical month for filing your tax return. Tilit AI's financial statements tool helps you gather the necessary information easily and without errors, which speeds up the process significantly. Understanding financial statements is also important for sole proprietors, even though their financial statements are simpler than those of a limited liability company.

April 2025: Tax returns for partnerships

April 12, 2025 (Sat, moves to April 14) — Employer reports for March
April 20, 2025 (Sun, moves to April 21) — Payment date for March VAT and employer contributions
April 30, 2025 (Wed) — Deadline for filing financial statements and tax returns (partnerships: Ay and Ky, i.e. general and limited partnerships)

Entrepreneur tip: April is a good time to check your company's cash flow and liquidity. Tilit AI's cash flow forecast looks 6 months ahead, which helps you anticipate potential cash flow bottlenecks in time. Regardless of industry, whether you're in the cleaning industry or a construction entrepreneur, cash flow management is critical.

May 2025: Tax returns for limited liability companies

May 12, 2025 (Mon) — Employer reports for April
May 20, 2025 (Tue) — Payment date for April VAT and employer contributions
May 31, 2025 (Sat, moves to June 2) — Deadline for filing tax returns (limited liability companies whose financial year ended on December 31, 2024)

Entrepreneur tip: For a limited liability company, May is critical for the tax return. Make sure the financial statements have been approved and audited in time. Use Tilit AI's tax return assistant for limited liability companies, which guides you through the entire process. Automated financial management can save significant time when preparing your tax return.

June 2025: Time for annual general meetings

June 12, 2025 (Thu) — Employer reports for May
June 20, 2025 (Fri) — Payment date for May VAT and employer contributions
June 30, 2025 (Mon) — Latest date for a limited liability company's annual general meeting (if the financial year ended on December 31, 2024)

Entrepreneur tip: A limited liability company's annual general meeting must be held within 6 months of the end of the financial year. Tilit AI's meeting minutes templates make it easier to draw up the necessary documents and ensure that all statutory matters are addressed. If you run an accounting firm, June can be a good time to think about accounting firm pricing models and updating them.

July 2025: Attention, quarterly filers!

July 12, 2025 (Sat, moves to July 14) — Employer reports for June
July 20, 2025 (Sun, moves to July 21) — Payment date for June VAT and employer contributions
July 31, 2025 (Thu) — Payment date for quarterly filers' April–June VAT

Entrepreneur tip: During the summer vacation season, it's important to make sure your company's financial management runs seamlessly even while you're on vacation yourself. Tilit AI's automated financial management handles the routines for you, and you can check the situation anywhere with the mobile app. Many companies should consider switching to complete financial management instead of invoicing software alone precisely because of this automation.

August 2025: Half-year review

August 12, 2025 (Tue) — Employer reports for July
August 20, 2025 (Wed) — Payment date for July VAT and employer contributions
August 31, 2025 (Sun, moves to September 1) — Half-year report (listed companies)

Entrepreneur tip: August is a good moment to do a half-year review of your company's finances and check whether you're on budget. Tilit AI's reporting tools show at a glance how your business is developing compared with the previous year and the budget. At this point in the year, it's also worth reading our tips on making financial management more efficient in a small business.

September 2025: Reviewing your YEL earned income

September 12, 2025 (Fri) — Employer reports for August
September 20, 2025 (Sat, moves to September 22) — Payment date for August VAT and employer contributions
September 30, 2025 (Tue) — Review of YEL earned income, especially if revenue has grown significantly

Entrepreneur tip: In September, it's worth assessing whether your YEL earned income is at the right level relative to your business. Tilit AI's YEL calculator helps you determine a suitable level of earned income and shows its effects on your pension and social security. AI and taxation solutions can help you find the optimal YEL level.

October 2025: The second important month for quarterly filers

October 12, 2025 (Sun, moves to October 13) — Employer reports for September
October 20, 2025 (Mon) — Payment date for September VAT and employer contributions
October 31, 2025 (Fri) — Payment date for quarterly filers' July–September VAT

Entrepreneur tip: October is a good time to start year-end tax planning. Review your company's profit and consider whether you need to make investments or take other tax planning measures before the end of the year. Tilit AI's tax forecast helps you optimize your taxation. With AI, you can also identify and prevent the most common financial management mistakes.

November 2025: Topping up prepayment taxes

November 12, 2025 (Wed) — Employer reports for October
November 20, 2025 (Thu) — Payment date for October VAT and employer contributions
November 30, 2025 (Sun, moves to December 1) — Supplementary payment of prepayment taxes (if your profit is about to exceed your prepayment taxes)

Entrepreneur tip: If your company's profit is about to exceed the amount of your prepayment taxes, it's worth making a supplementary payment in November to avoid interest on back taxes. Tilit AI's tax forecast automatically calculates whether you need an additional prepayment and how much it should be. AI can help small business owners save both time and money, especially in tax planning.

December 2025: Planning the financial statements

December 12, 2025 (Fri) — Employer reports for November
December 20, 2025 (Sat, moves to December 22) — Payment date for November VAT and employer contributions
December 31, 2025 (Wed) — Financial statements planning and tax optimization

Entrepreneur tip: December is the last moment to take tax planning measures that affect the financial year's profit. Consider possible depreciation, reserves and investments. Tilit AI's financial statements simulator helps you see how different options affect your company's profit and taxation. If you run an accounting firm, December can be a good moment to evaluate measuring accounting firm efficiency and set goals for the next year.

Special considerations for different business forms

Sole proprietorship

Entrepreneurs operating as a sole proprietorship should note in particular that the tax return must be filed by March 31, 2025, if the financial year ended on December 31, 2024. In a sole proprietorship, the entrepreneur's personal income and the business's income are taxed together, so tax planning is especially important.

Limited liability company

Limited liability companies must file their tax return by May 31, 2025, if the financial year ended on December 31, 2024. In addition, the annual general meeting must be held by June 30, 2025. In limited liability companies, planning the dividend distribution and its timing are important elements of tax planning.

Partnerships (Ay, Ky)

Partnerships must file their tax return by April 30, 2025, if the financial year ended on December 31, 2024. In partnerships, the profit is distributed to the partners, so the partners' personal tax planning is linked to the company's profit.

Cooperative

Cooperatives' deadlines largely follow the schedules of limited liability companies. A cooperative's general meeting must be held by June 30, 2025, if the financial year ended on December 31, 2024.

Schedule for quarterly and half-yearly filers

If your company's revenue is less than €100,000, you can choose to report and pay VAT quarterly:

January 31, 2025 — VAT for October–December 2024
April 30, 2025 — VAT for January–March 2025
July 31, 2025 — VAT for April–June 2025
October 31, 2025 — VAT for July–September 2025

If your company's revenue is less than €30,000, you can report and pay VAT half-yearly:

January 31, 2025 — VAT for July–December 2024
July 31, 2025 — VAT for January–June 2025

Entrepreneur tip: Quarterly or half-yearly filing can significantly ease a small company's administrative burden. Tilit AI automatically identifies which reporting period your company belongs to and reminds you of the correct deadlines. Our article AI in accounting firm work explains how AI can automate these reporting processes.

Managing and planning prepayment taxes

Sizing your prepayment taxes correctly is an important part of your company's cash flow planning. In 2025, the due dates for prepayment taxes are:

January 23, 2025
February 24, 2025
March 24, 2025
April 23, 2025
May 23, 2025
June 23, 2025
July 23, 2025
August 25, 2025
September 23, 2025
October 23, 2025
November 24, 2025
December 23, 2025

If you notice that your company's profit is turning out larger or smaller than expected, you can apply to change your prepayment taxes in OmaVero, the Finnish Tax Administration's online service. Prepayments that are too large tie up working capital unnecessarily, and prepayments that are too small lead to paying back taxes.

Entrepreneur tip: Tilit AI's predictive financial management continuously compares your actual profit with your prepayment taxes and proactively notifies you if it's worth updating the amount of your prepayment taxes. Careful cash flow management helps ensure that your company always has enough liquidity to pay its prepayment taxes.

Preparing financial statements and optimizing taxation

It's worth preparing for the financial statements throughout the year, not just when the financial year ends:

January–March: Make sure the previous financial year's bookkeeping is complete and the vouchers are in order
April–June: Check that depreciation plans are up to date
July–September: Map out investment needs for the rest of the year
October–December: Take the necessary tax planning measures

In financial statements planning, you can influence your company's profit in the following ways, among others:

Timing and amount of depreciation on fixed assets
Inventory valuation
Write-offs of receivables
Timing of investments
Appropriations (e.g., an operating reserve for a sole proprietorship)

Entrepreneur tip: Tilit AI's financial statements simulator helps you see the effects of different decisions on your company's profit and taxation. You can try out different scenarios and choose the optimal option for your company. If you run an accounting firm, you can also use these tools to improve your accounting firm's client satisfaction.

Tools and tips for managing your financial calendar

Digital calendars and reminders

Mark all important dates in your digital calendar and set reminders 1–2 weeks before each deadline. That way, you have time to react even when you're busy.

Tilit AI's automatic reminders

The Tilit AI financial management software automatically reminds you of all important deadlines and tells you what actions you need to take. Reminders arrive both in the app and by email.

Cooperation with your accountant

Even if you use digital financial management, good cooperation with your accountant is still important. Agree clearly with your accountant on who handles what and on what schedule.

Monthly checklist

Create a monthly checklist of financial management routines for yourself:

Bring sales invoicing up to date
Process and pay purchase invoices
Deliver receipts and vouchers to accounting
Pay salaries and compensation for work
Check and pay the VAT return and employer contributions
Update the cash flow forecast

Summary: How to get the most out of your financial calendar

A financial calendar is an invaluable tool for entrepreneurs, helping you stay on schedule and avoid unpleasant surprises. Mark the important dates in your calendar right away, and let digital financial management take care of the rest.

Modern financial management tools such as Tilit AI automate a large share of the routines and remind you of important deadlines in good time. This way, you can focus on the core of your business — your customers and products.

Remember that good financial management is not just a statutory obligation but also an important management tool that gives you valuable information about the state of your business and helps you make better decisions.

The entrepreneur's 2025 financial calendar: Mark these dates in your calendar