Interim Loan Limit & Per-Installment Interest Calculator
Enter presale price, installments, and rate to compare loan limit, per-installment interest, and interest-free vs deferred total burden in one view.
🏢 Price & Ratios
e.g. 600M KRW = 60000
Usually 60% of price, 40% in regulated areas
📅 Schedule & Rate
Cofix + spread (e.g. 4.5%)
= loan maturity date
💳 Interest Payment Method
📊 Result
Selected method: Deferred (lump sum at settlement)Total interest
1,892만 2,192원
Lump sum at settlement
1,892만 2,192원
Loan limit
3억 6,000만원
Total loan disbursed
3억 6,000만원
Self-funded (over limit)
0원
Price composition
🧾 Per-Installment Schedule
| Round | Due date | Installment | Loan | Self-funded | Loan days | Interest |
|---|---|---|---|---|---|---|
| 1 | 2026.10.01 | 60,000,000원 | 60,000,000원 | 0원 | 731d | 5,407,397원 |
| 2 | 2027.02.01 | 60,000,000원 | 60,000,000원 | 0원 | 608d | 4,497,534원 |
| 3 | 2027.06.01 | 60,000,000원 | 60,000,000원 | 0원 | 488d | 3,609,863원 |
| 4 | 2027.10.01 | 60,000,000원 | 60,000,000원 | 0원 | 366d | 2,707,397원 |
| 5 | 2028.02.01 | 60,000,000원 | 60,000,000원 | 0원 | 243d | 1,797,534원 |
| 6 | 2028.06.01 | 60,000,000원 | 60,000,000원 | 0원 | 122d | 902,466원 |
| Total | 360,000,000원 | 360,000,000원 | 0원 | — | 18,922,192원 | |
⚖️ Total Burden by Method
※ On a simple-interest basis, deferred and monthly totals are equal; only the timing differs (spread monthly vs lump sum).
※ Interest-free means 0 interest, but a price premium is usually included, so the real total may differ.
Basis
- 🏦 Loan limit: usually 60% of price (6 × 10%). May shrink to 40–50% in regulated areas.
- 📈 Interest: per-installment loan × annual rate × (days from disbursement to settlement ÷ 365), simple accrual.
- 💳 Method: deferred = lump sum at settlement, monthly = pay as you go (same total), free = developer pays.
※ All figures are reference estimates. Actual limits, rates, and schedules depend on the bank/developer collective-loan terms.
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