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Requesting an extension for your income tax return? Here’s what you need to know as an entrepreneur

Written by:: Balancify

Taxes
Income Tax Extension
14 September 2026

The deadline for filing your income tax return comes around faster every year than you might expect. Perhaps you are still missing some information, your bookkeeping is not completely up to date, or you simply have not had the time to get everything in order. Fortunately, this does not immediately mean you will run into problems with the Dutch Tax Administration.

In many cases, you can apply for an extension for filing your income tax return. But how exactly does this work, when should you arrange it, and are there any disadvantages? In this article, we explain everything step by step.

When do you need to file your income tax return?

As an entrepreneur, you file an income tax return every year for the previous tax year. For most entrepreneurs, the return must be submitted to the Dutch Tax Administration by 1 May at the latest.

If you miss this deadline without requesting an extension, you may receive reminders, formal notices and, eventually, a penalty for late filing. If you fail to file a return altogether, the Dutch Tax Administration may also estimate your income itself. This is usually not in your favour.

It is therefore wise to take action in time if you expect that you will not be able to meet the deadline.

What does an extension for your income tax return mean?

If you are granted an extension, you receive additional time to submit your tax return. This gives you more time to collect missing documents, complete your bookkeeping, or carefully review everything together with your accountant.

It is important to know that an extension for filing your tax return is not the same as an extension for paying your taxes. If you ultimately have tax to pay, separate rules apply to the payment deadline.

How can you request an extension?

Requesting an extension yourself

If you file your own tax return, you can request an extension through Mijn Belastingdienst using your DigiD.

In many cases, you will then receive an extension until 1 September of the same year. However, your request must be submitted before the original filing deadline.

Requesting an extension is usually straightforward and generally does not require an extensive explanation.

Extension through your accountant

If you work with an accountant or bookkeeper, they may be able to use the Becon extension scheme.

Under this scheme, registered tax advisers and bookkeepers can request a longer filing period for their clients. This gives them more time to prepare and process all tax returns carefully.

Many entrepreneurs assume this means their tax return will automatically be filed much later, but that is not necessarily the case. As soon as all the required information is complete, the return can still be submitted earlier.

What happens if you do not request an extension?

If you miss the deadline without having requested an extension, you will usually first receive a reminder from the Dutch Tax Administration.

If you still do not respond, you may receive a formal notice to file your return. Eventually, you risk receiving a penalty. The Dutch Tax Administration may also make an estimated assessment of your income, which could result in you paying more tax than necessary.

Even if you are already late, it is advisable to submit your tax return as soon as possible. The longer you wait, the greater the potential consequences.

Be aware of tax interest

One point that many entrepreneurs overlook is tax interest.

Although an extension for filing your income tax return gives you additional time, it does not automatically mean that you will avoid additional costs. If you ultimately have tax to pay, the Dutch Tax Administration may charge tax interest if your return is processed later.

The amount of tax interest you pay depends on the applicable rates set by the Dutch Tax Administration.

How can you limit tax interest?

If you expect to have additional tax to pay, requesting a provisional tax assessment can be a sensible solution.

With a provisional assessment, you pay tax in advance based on an estimate of your profit. This can help prevent a large amount from becoming due later, potentially subject to tax interest.

For entrepreneurs with growing turnover or strongly fluctuating income, this can help prevent unexpected tax bills.

When is requesting an extension a good idea?

Requesting an extension can be a good choice when:

  • Your bookkeeping is not yet fully up to date.
  • You are waiting for missing documents.
  • Your accountant needs more time.
  • You have complex income or tax deductions.
  • You want to make sure your tax return is filed correctly.

Having additional time can help prevent mistakes, which is often more important than filing as quickly as possible.

When might it be better not to request an extension?

In some situations, requesting an extension may be less beneficial.

For example, if you expect to receive a tax refund, filing your return sooner generally means you will receive any refund sooner as well.

Similarly, if your tax return is relatively straightforward and all the necessary information is already available, it may make more sense to file immediately.

Frequently asked questions

Does requesting an extension cost money?

No. Requesting an extension from the Dutch Tax Administration is free.

Do I need to request an extension every year?

Yes. An extension only applies to the relevant tax year and must be requested again if you need one in a subsequent year.

Can I file my tax return before the end of my extension period?

Yes. An extension gives you additional time, but you are not required to use the entire period. As soon as your bookkeeping is complete, you can file your return.

Conclusion

An extension for filing your income tax return can be a useful solution if you need more time to get your bookkeeping in order. As long as you request it on time, you can often avoid unnecessary stress and potential penalties.

However, keep in mind that requesting an extension is not always the most financially advantageous option. Particularly if you expect to owe tax, tax interest and other financial consequences may play a role. Unsure about your situation? It can be helpful to ask an accountant or bookkeeper to review it with you.

Requesting an extension for your income tax return? Here’s what you need to know as an entrepreneur

Written by: Balancify

Taxes
Income Tax Extension
14 September 2026

The deadline for filing your income tax return comes around faster every year than you might expect. Perhaps you are still missing some information, your bookkeeping is not completely up to date, or you simply have not had the time to get everything in order. Fortunately, this does not immediately mean you will run into problems with the Dutch Tax Administration.

In many cases, you can apply for an extension for filing your income tax return. But how exactly does this work, when should you arrange it, and are there any disadvantages? In this article, we explain everything step by step.

When do you need to file your income tax return?

As an entrepreneur, you file an income tax return every year for the previous tax year. For most entrepreneurs, the return must be submitted to the Dutch Tax Administration by 1 May at the latest.

If you miss this deadline without requesting an extension, you may receive reminders, formal notices and, eventually, a penalty for late filing. If you fail to file a return altogether, the Dutch Tax Administration may also estimate your income itself. This is usually not in your favour.

It is therefore wise to take action in time if you expect that you will not be able to meet the deadline.

What does an extension for your income tax return mean?

If you are granted an extension, you receive additional time to submit your tax return. This gives you more time to collect missing documents, complete your bookkeeping, or carefully review everything together with your accountant.

It is important to know that an extension for filing your tax return is not the same as an extension for paying your taxes. If you ultimately have tax to pay, separate rules apply to the payment deadline.

How can you request an extension?

Requesting an extension yourself

If you file your own tax return, you can request an extension through Mijn Belastingdienst using your DigiD.

In many cases, you will then receive an extension until 1 September of the same year. However, your request must be submitted before the original filing deadline.

Requesting an extension is usually straightforward and generally does not require an extensive explanation.

Extension through your accountant

If you work with an accountant or bookkeeper, they may be able to use the Becon extension scheme.

Under this scheme, registered tax advisers and bookkeepers can request a longer filing period for their clients. This gives them more time to prepare and process all tax returns carefully.

Many entrepreneurs assume this means their tax return will automatically be filed much later, but that is not necessarily the case. As soon as all the required information is complete, the return can still be submitted earlier.

What happens if you do not request an extension?

If you miss the deadline without having requested an extension, you will usually first receive a reminder from the Dutch Tax Administration.

If you still do not respond, you may receive a formal notice to file your return. Eventually, you risk receiving a penalty. The Dutch Tax Administration may also make an estimated assessment of your income, which could result in you paying more tax than necessary.

Even if you are already late, it is advisable to submit your tax return as soon as possible. The longer you wait, the greater the potential consequences.

Be aware of tax interest

One point that many entrepreneurs overlook is tax interest.

Although an extension for filing your income tax return gives you additional time, it does not automatically mean that you will avoid additional costs. If you ultimately have tax to pay, the Dutch Tax Administration may charge tax interest if your return is processed later.

The amount of tax interest you pay depends on the applicable rates set by the Dutch Tax Administration.

How can you limit tax interest?

If you expect to have additional tax to pay, requesting a provisional tax assessment can be a sensible solution.

With a provisional assessment, you pay tax in advance based on an estimate of your profit. This can help prevent a large amount from becoming due later, potentially subject to tax interest.

For entrepreneurs with growing turnover or strongly fluctuating income, this can help prevent unexpected tax bills.

When is requesting an extension a good idea?

Requesting an extension can be a good choice when:

  • Your bookkeeping is not yet fully up to date.
  • You are waiting for missing documents.
  • Your accountant needs more time.
  • You have complex income or tax deductions.
  • You want to make sure your tax return is filed correctly.

Having additional time can help prevent mistakes, which is often more important than filing as quickly as possible.

When might it be better not to request an extension?

In some situations, requesting an extension may be less beneficial.

For example, if you expect to receive a tax refund, filing your return sooner generally means you will receive any refund sooner as well.

Similarly, if your tax return is relatively straightforward and all the necessary information is already available, it may make more sense to file immediately.

Frequently asked questions

Does requesting an extension cost money?

No. Requesting an extension from the Dutch Tax Administration is free.

Do I need to request an extension every year?

Yes. An extension only applies to the relevant tax year and must be requested again if you need one in a subsequent year.

Can I file my tax return before the end of my extension period?

Yes. An extension gives you additional time, but you are not required to use the entire period. As soon as your bookkeeping is complete, you can file your return.

Conclusion

An extension for filing your income tax return can be a useful solution if you need more time to get your bookkeeping in order. As long as you request it on time, you can often avoid unnecessary stress and potential penalties.

However, keep in mind that requesting an extension is not always the most financially advantageous option. Particularly if you expect to owe tax, tax interest and other financial consequences may play a role. Unsure about your situation? It can be helpful to ask an accountant or bookkeeper to review it with you.

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