You may deduct expenses related to the transport. However, you cannot deduct expenses relating to private use of your car.
Keep receipts as documentation
In order to deduct expenses related to the transport, you will have to be able to document such expenses. You do that by keeping the receipts (vouchers) on all your expenses for the entire income year.
Deductions for operating and maintenance expenses
You are entitled to deduct the part of your operating and maintenance expenses on your car relating to the transport. You calculate the proportionate expenses which the transport represents of the total annual number of kilometres. This means that if the transport only makes up 20% of your total annual kilometres, you are only entitled to deduct 20% of your expenses for ongoing maintenance, petrol, green vehicle tax, insurance, etc.
Deductions for the expected annual loss of value
You may deduct a proportionate part of the expected annual loss of value of your car. This proportionate part is calculated as the total number of kilometres minus those you travelled to transport items.
The rules of the Danish Act on Amortisation and Depreciation (Afskrivningsloven) do not apply to your car - it is only possible to apply these rules if you run a business.
Keep a mileage log
You should keep a mileage log in order to document your deductions.
In the mileage log, you register the mileage at the beginning and the end of the income year, and the mileage when you start and stop a transport of items for someone.
Loss is not tax deductible
You cannot deduct any loss. This means that if your annual expenses exceed your annual income, you have to enter DKK 0 in your tax assessment notice.
A loss is only tax deductible if you run a commercial business.