I have hired a janitorial service to mow my lawn. The payment is always made in cash. How can I prove the payments to the tax office so that my expenses for the household-related services can be taken into account?

In the case of cash payment, consideration is unfortunately excluded. Expenses for household-related services can only be taken into account if they are made non-cash and the payment is transferred to the contractor's account. The expenses must be proven by presenting the invoice and proof of payment, e.g. by bank statement.