Scam messages have been sent out in the Tax Administration’s name. Read more about scams.
These instructions are for private individuals and for companies and organisations.
When you request prepayments, you receive a prepayment decision in MyTax. The decision includes due dates, payment instalments and other details for making the payments. How to find the tax decision in MyTax.
If you are an individual taxpayer, self-employed individual, partner of a general or limited partnership or an agricultural operator and have not activated Suomi.fi Messages, i.e. you have not switched to electronic communications, you will also receive the prepayment decision and payment instructions by post.
You can make prepayments in multiple ways:
If you want to make additional prepayments, you must request them separately before payment. Read how to request and make additional prepayments.
The due date for tax prepayment is the 23rd of the month. A due date falling on a Saturday, Sunday or a public holiday is moved to the next business day. The number of instalments depends on the prepayment amount.
If you pay the tax after the due date, you will have to pay late-payment interest. Read more about the consequences of late payment.
The previous decision and instalments are valid until you receive a new decision and new payment instalments. If you have not received a new decision by the due date, pay your prepayment in accordance with the previous decision.
If the prepayment is too high, request an adjustment of the amount. Do not leave the tax unpaid and do not pay a smaller amount than what has been imposed in the prepayment decision. You can request adjustment until the Tax Administration has completed the tax assessment process.
If you have paid too much, the excess amount will be paid back to you as a tax refund. Read more about tax refunds.
If you notice during the tax year that you have not made enough tax prepayments, you can request a change to the prepayment amount.
If the tax year has ended, you can make an additional prepayment. Instructions for requesting and making an additional prepayment.
If your prepayments or the additional prepayment you have made is too small, you must pay back taxes. In addition, you will have to pay late-payment interest with relief.
Individual taxpayers (such as private individuals and self-employed individuals) can estimate the additional prepayment amount with the tax rate calculator.
Corporate entities can also estimate the amount of additional prepayment and late-payment interest with relief with a calculator.
The total prepayment amount is based on an estimate of taxable income.
The Tax Administration calculates the prepayment amount based on your latest finalised tax assessment. If you request a change to your prepayment amount this year, your prepayment for the next year will be based on the recalculation.
If you are a new entrepreneur, the prepayment amount is based on your own estimate of taxable income. Submit the estimate in MyTax or on a start-up notification.
Self-employed individuals: If you operate your business as a self-employed individual, the prepayment amount depends not only on your taxable business income but also on all your other income, such as wages and startup grants.
General and limited partnerships: The prepayment amount for partners in general or limited partnerships depends not only on business income, but also on all other income, such as wages and startup grants. Partners must make prepayments on their profit share from the general or limited partnership.
Agricultural operators: Agricultural operators’ prepayments depend not only on taxable income from agriculture but also on all other income, including wages and trade income.
Whether or not a company has been entered in the prepayment register has an effect on how the company’s customers and other business partners must act when they pay, for example, trade income to the company.
If a company is not in the prepayment register, the payer must withhold tax on trade income and compensation for use. In other words, the payer takes care of the taxes. But if a company is in the prepayment register, the entrepreneur makes prepayments and the payer of trade income and the like does not need to withhold tax.
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