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Track business mileage

Log business trips and automatically calculate mileage reimbursement.

3 minUpdated 8 June 2026

Add a trip

  1. Go to Expenses → New expense.
  2. Choose type Trip.
  3. Enter departure point, destination, and number of kilometres.
  4. Declair calculates the amount based on your mileage rate.
  5. Optionally add a description (e.g. "Client visit Acme BV").

Set mileage rate

Under Settings → Tax you set the rate per kilometre. Declair uses the standard Dutch tax rate by default, but you can set a custom rate if agreed with your accountant.

Business vs. private

Only business trips are deductible. Note the business purpose for each trip. In an audit, the tax authority expects a complete mileage log.

Export

Trips appear in your expense overview and are included in VAT and annual reports. Export via Settings → Import/Export as CSV or Excel.

Still have questions? Our team is happy to help.