Cost or investment? The €450 rule
A purchase for your business is a cost or an investment. The difference decides how quickly the expense lowers your profit.
Less than €450: a cost straight away
Do you buy a business asset for less than €450? Then you deduct the amount in one go as a cost. (Belastingdienst: depreciation)
€450 or more: depreciate
Does it cost €450 or more and last longer than a year? Then it is a business asset. You spread the cost over the years that you use it. This is called depreciation (see depreciation).
Which amount counts?
- You look at the price without the VAT that you can deduct.
- You look at each business asset, not at each invoice.
- Things that you only use together, such as a desk with a fixed attachment, are counted together.
Why it matters
An investment of €450 or more can count towards the KIA (small-scale investment deduction). If you sell it later, a disposal (desinvestering) may follow.
In ZZPboek
For a purchase of €450 or more, the app suggests making it a fixed asset. You choose the useful life and the residual value. After that, the app books the depreciation each year.

Sources
This article is general information, not tax advice. If you are unsure about your situation, ask the Belastingdienst or an adviser.