Who is eligible for the interest relief?
The interest relief is available to taxpayers who are repaying a housing loan granted to finance a residential investment, including:
✅ construction of a residential building,
✅ purchase of a new building or residential premises,
✅ superstructure, extension, or conversion of a building for residential purposes,
✅ contribution of a construction or housing deposit to a housing cooperative.
The relief also covers loans intended to repay other housing loans. Taxpayers may use the relief until the end of the repayment period specified in the loan agreement, but no later than December 31, 2027.
The right to the relief is available only to those who took out a loan in the period from January 1, 2002, to January 1, 2007. It is important to note that the date of disbursement of funds counts, not the date of signing the loan agreement.
The relief can also be settled in the case of joint taxation of income (e.g., spouses, single parents) and does not exclude the possibility of using other tax reliefs, such as child relief, internet relief, or rehabilitation relief.
How to calculate the interest relief?
The relief amount is calculated according to the formula:
Interest paid – (325,990 PLN / Loan amount taken * interest paid)
Only interest on the portion of the loan not exceeding the amount of 325,990 PLN is deductible.
When is it not possible to use the interest relief?
The interest relief cannot be used if the taxpayer or their spouse has used:
- the so-called large construction relief,
- relief for systematic savings in a housing savings bank (unless they have returned previously deducted amounts).
Additionally, the relief is not available if:
- the interest has been included in tax-deductible expenses,
- the interest has been refunded in any form,
- the interest has already been deducted from income.
What Documents Are Required?
To use the relief, the taxpayer must have:
- A certificate of the amount of interest paid issued by the lender,
- Evidence confirming expenses incurred (it does not need to be attached to the PIT, but must be kept for 5 years).
What forms need to be submitted?
The following must be attached to the tax return:
✅ PIT-D – the amount of the deduction is shown in it,
✅ PIT-2K – attached when settling the relief for the first time.
The relief should be shown in the declaration PIT-36, PIT-37, or PIT-28.
If you are settling the interest relief for the first time, you must attach PIT-2K. In subsequent years, you only submit PIT-D.
It is worth remembering that the deduction can be made at the earliest for the year in which the residential investment was completed.
