The expenses will de deducted from the invoice sum before the payroll and they will be covered in full, as tax-free. In other words, the expenses will be separated from the invoiced sum before taxes and insurance payments, so you don't have to pay taxes for the expenses. After this, the social security contribution, UKKO.fi accident insurance and the withholding tax based on your tax card, will be paid. You'll receive the remaining amount plus the amount of expenses to your own bank account.
Please note! Receipt based expenses are not pay, which means they won't show up in your salary certificate. You can check the expenses from your own bank account.