Soft Debt

What Is Soft Debt?

Soft debt is a loan without fixed monthly payments. It usually has low or zero interest and a long term, often 30 years or more. Payments are deferred for years or made only from surplus cash, and the loan is sometimes forgiven at maturity if the owner has met its affordability rules. Hard debt, by contrast, is a conventional mortgage with scheduled payments that are due no matter how the property performs.

Soft debt is one of the main forms of gap financing. It comes mostly from public agencies, such as state housing finance agencies and local housing trust funds, and from nonprofits and foundations.

How It Works

Soft loans are usually subordinate: they sit behind the first mortgage in the capital stack and are paid only after operating expenses, reserves, and senior loan payments. Common structures include:

• Cash-flow or residual receipts loans. The borrower pays a share of any surplus cash left each year.
• Deferred payment loans. Interest builds up, and the balance comes due at maturity, sale, or refinancing.
• Forgivable loans. The balance is canceled if the owner keeps the property affordable for the required term.

Federal HOME rules, for example, let local governments invest through interest-free loans, deferred payment loans, interest subsidies, grants, and other forms.

Example

The Delaware State Housing Authority (DSHA) published loan terms in its 2025–2026 tax credit funding rules. While its amortizing permanent loans carried a 5.5% rate, its deferred permanent loans carried 1.00% interest over 30 years, with the built-up interest payable from cash flow. For most developments, deferred financing was capped at $60,000 per unit, up to $3.5 million to $4.5 million depending on project size. DSHA says its rates are subject to change.

Soft Debt vs. Grants

Why lend money that may never be fully repaid instead of giving it?

• Tax credit basis. Under Section 42(d)(5)(A) of the Internal Revenue Code, costs paid with a federally funded grant cannot count toward a building’s eligible basis, which would shrink its credits. Structuring the money as a loan avoids that cut.
• Federal subsidy rules. According to the Office of the Comptroller of the Currency, for buildings placed in service after July 30, 2008, a below-market federal loan no longer limits a new building to the 4% credit. The Housing and Economic Recovery Act of 2008 made that change.

Criticisms and Limitations

Unpaid interest on deferred loans keeps adding to the balance. When cash flow is thin, the debt can outgrow what the property can repay, complicating a later sale or refinancing. Stacking several soft lenders also stacks their rules. DSHA warns that HOME funds bring program requirements on top of tax credit rules, and the stricter rule applies wherever they conflict.