1. The formula
DSCR = NOI ÷ Annual Debt Service (ADS)
NOI (Net Operating Income) = gross rent − vacancy − operating expenses − property tax − PM fee. See the yield & NOI guide for the full breakdown.
Example: NOI ¥4,000,000 and ADS ¥3,200,000 → DSCR = 1.25. That clears most Japanese regionals; a city bank may ask for more.
2. What Japanese lenders actually require
- City banks & major regionals: 1.3+ (conservative)
- Shinkin banks & non-banks: 1.2+ (typical baseline)
- Strong personal balance sheet: lenders may accept 1.1 with a large equity cushion or high-income guarantor
DSCR of 1.0 means NOI just barely covers debt. A single vacancy cycle or a 50 bps rate move pushes you underwater — which is why 1.2 is the practical floor.
3. If the deal doesn't clear
- Put more equity down. Smaller loan → smaller ADS → higher DSCR.
- Extend the loan term. Payments drop; total interest rises. In Japan, 25–35 year terms are common for RC (reinforced concrete) property.
- Negotiate the rate. Bring competing term sheets. Regional banks often match to keep the deal.
- Raise NOI. Reprice under-market units, cut PM fees, reduce vacancy.
- Cut the price. A price cut is the single biggest DSCR lever — always model it before walking.
4. DSCR ≠ cash flow
A deal with DSCR 1.25 can still bleed after-tax cash if you factor in property tax, capex reserves, and — for non-residents — the 20.42% withholding on rental income. See the non-resident tax guide. DSCR gets you the loan; after-tax CF tells you if the deal is worth doing.
5. Special note for foreign buyers
Overseas buyers usually cannot access mainstream domestic yen financing. Options: SMBC Trust, SBJ Bank, ORIX, and some Shinkin banks lend to non-residents at 2.5–4.5% with LTV 50–70% and shorter terms — meaning your DSCR math is stricter than a Japanese resident's. Model conservatively.
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