If a tax deduction has been declared and withheld for your invoice by a recipient of a construction service performed by you, it will be credited against your taxes to be paid. The following taxes are set off in succession: The income tax withheld and declared in accordance with Section 41a paragraph 1 of the Income Tax Act (EStG), advance payments on income tax or corporation tax, income tax or corporation tax of the tax or assessment period during which the benefit was provided, and the deductions to be notified and paid by you within the meaning of Sections 48, 48a of the EStG for works The crediting is made by the tax office, an application for this is not required. A credit may be refused if the recipient of your construction work as a deductor declares the deduction amount but has not paid it and there is reason to believe that there has been an abuse. If you are not required to submit payroll tax declarations and you are not eligible for income tax or corporation tax, or if you can demonstrate that no tax claims will be secured during the tax period, you can apply to the tax office for reimbursement of the deduction amounts. The application is formal and is made using an officially prescribed model form. This is available via the Form Management System (FMS) of the Federal Finance Administration. The application is time-bound. It may be made until the end of the second calendar year following the year in which the amount of the deduction has been declared. If the provisions of an agreement to avoid double taxation are applied and a longer period is mentioned in it, this longer period will apply. The tax office examines the application and, if the above conditions are met, reimburses you for the deduction amounts paid for your invoice.