Didimdol & Newborn Special Loan Limit Calculator

Pick the Didimdol Loan or the Newborn Special Loan, enter your income, assets, and the home's purchase price, and this checks eligibility and estimates your LTV-based loan limit. Because the income/asset/price caps, LTV, and loan caps all shift with government policy, only reference defaults are auto-filled for the selected product — everything stays directly editable.

First-time buyers, newlywed households, households with 2+ children, and similar special categories may have different income/price caps and loan caps. Edit the criteria fields below to match the current official announcement.

Applicable caps

Reference defaults for the selected loan product are auto-filled here. Because the income/asset/price caps, LTV, and loan caps all change under government housing policy, none of these are fixed values — check the latest official announcement from the Korea Housing Finance Corporation (HF) or Fund e-Deundeun before you apply, and edit the fields below to match.

Enter combined household income, net assets, and the home's purchase price to check eligibility and estimate your loan limit.

About Didimdol and newborn special loan limits

The Didimdol loan is Korea's government-backed mortgage program for first-time and no-home-owning buyers with modest income, offering below-market interest rates, while the newborn special loan is an enhanced version specifically for households with a recent birth or adoption, offering even more favorable terms — both cap how much you can borrow based on income, assets, and the property's price relative to a loan-to-value ratio. This tool estimates your maximum loan amount under whichever program applies to you.

How the loan limit is calculated

The calculator first checks your eligibility against each program's household income, net asset, and (for the newborn program) birth/adoption recognition period requirements — all using reference thresholds you can adjust since they're set by policy and revised periodically. It then computes two figures: an LTV-based limit (property price × LTV percentage) and each program's own stated maximum loan cap, taking whichever of the two is lower as your final estimated loan limit, since a loan must satisfy both the collateral-based LTV constraint and the program's absolute ceiling simultaneously.

Frequently asked questions

What's the difference between Didimdol and the newborn special loan?
Both are government-backed low-interest mortgage programs for first-time or no-home-owning buyers with income limits, but the newborn special loan specifically requires a recognized birth or adoption within a defined recent period and offers correspondingly better terms (like a higher income ceiling or more favorable rate) as a family policy incentive, on top of the standard Didimdol eligibility framework.
Why does the calculator use adjustable reference values instead of fixed numbers?
Income thresholds, asset limits, LTV percentages, and loan caps for these government programs are set by housing finance policy and get revised periodically (sometimes annually) — since this calculator can't know the exact currently effective figures at any given moment, it provides commonly cited reference defaults you should verify and adjust against the current official program terms.
Why is the final loan limit the lower of the LTV-based and program cap figures?
A mortgage must satisfy both constraints simultaneously — the LTV limit exists to ensure the loan doesn't exceed a safe proportion of the collateral property's value, while the program cap exists as an absolute ceiling regardless of property value, so whichever constraint is more restrictive in your specific case determines your actual borrowing limit.