Three practical levels. 10% — the accepted minimum at most banks. The bank requires low-down-payment insurance, usually 0.3–1.0% of the missing down payment per year, added to the instalment. The bank margin is usually 0.3–0.5 pp higher than at 20%. 20% — the sweet spot. No low-down-payment insurance, standard margin, full range of offers. 30%+ — a bargaining chip. The bank shaves another 0.1–0.3 pp off the margin and may drop some ancillary fees.
Concrete low-down cost. Property 500 000 PLN, 10% down (50 000) vs 20% (100 000). Loan 450 vs 400 000 PLN. Margin 2.7% vs 2.4%. Low-down insurance at 10% usually runs 100–200 PLN a month for the first 5–10 years. Sum of higher instalments plus insurance over 30 years: about 60–80 000 PLN of extra cost in the 10% case vs the 20% case. That is why waiting 6–12 months and gathering more down payment pays off.
Where to find down payment. Savings — the simplest. A family gift (parents and grandparents are exempt from gift tax up to high thresholds). Selling another property. PIT exemption on capital gains (PIT act art. 21(1)(131)) — if you sell within 5 years of buying and reinvest in another housing goal, no tax. Government scheme: the Family Housing Loan (up to 200 000 PLN of down payment covered by a state guarantee in 2026 for families with children), with tight income rules.
Frequently asked questions
10% of the property value — KNF Recommendation S. Every Polish bank follows it. Some require 20% for investment properties (second and later homes).
Partly. The scheme provides a state guarantee for the missing down payment up to 200 000 PLN. Low-down insurance still applies, but the bank accepts a 0% own-funds mortgage.
You can request to drop the low-down insurance. Banks usually agree with documented 20%+ equity, but the initiative is on you — the bank will not offer it.