Refinance Calculator
Analyze mortgage refinancing benefits
Calculate actual savings from refinancing by comparing interest savings against prepayment fees. Use this to decide whether to refinance when rates drop.
🔄 What is Refinancing?
Refinancing means replacing your current loan with a new one at a lower rate. Consider refinancing when rates drop 0.5%+ below your current rate. However, factor in prepayment fees, stamp duty, and registration costs to determine actual benefit.
🏠 Mortgage Calculator
Monthly Payment
152만원
Total Payment
5.5억원
Total Interest
2.5억원
82.4% of principal
📊 Principal vs Interest
Principal
3.0억원
Interest
2.5억원
📅 Payment Schedule
| Year | Annual Payment | Principal | Interest | Balance |
|---|---|---|---|---|
| 1 | 18,240,671원 | 4,839,680원 | 13,400,991원 | 3.0억원 |
| 2 | 18,240,671원 | 5,062,014원 | 13,178,657원 | 2.9억원 |
| 3 | 18,240,671원 | 5,294,562원 | 12,946,109원 | 2.8억원 |
| 4 | 18,240,671원 | 5,537,793원 | 12,702,878원 | 2.8억원 |
| 5 | 18,240,671원 | 5,792,199원 | 12,448,472원 | 2.7억원 |
| 6 | 18,240,671원 | 6,058,291원 | 12,182,380원 | 2.7억원 |
| 7 | 18,240,671원 | 6,336,608원 | 11,904,063원 | 2.6억원 |
| 8 | 18,240,671원 | 6,627,711원 | 11,612,960원 | 2.5억원 |
| 9 | 18,240,671원 | 6,932,187원 | 11,308,484원 | 2.5억원 |
| 10 | 18,240,671원 | 7,250,650원 | 10,990,021원 | 2.4억원 |
| ... Total 30 years | ||||
💰 Interest Rate Comparison
| Rate | Monthly | Total Interest | Difference |
|---|---|---|---|
| 3.5% | 1,347,134원 | 1.8억원 | -62,251,872원 |
| 4.0% | 1,432,246원 | 2.2억원 | -31,611,616원 |
| 4.5% | 1,520,056원 | 2.5억원 | +0원 |
| 5.0% | 1,610,465원 | 2.8억원 | +3255만원 |
| 5.5% | 1,703,367원 | 3.1억원 | +6599만원 |
Mortgage Calculation Result
Monthly 152만원
✨ Total interest 2.5억원Loan 3.0억원, 4.5% rate, 30 years
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Important Note
This calculator is for reference only. Actual loan terms may vary based on lender, credit score, and collateral value. Contact your financial institution for accurate information.
📐 Refinance Benefit Calculation
Interest Savings = (Old Rate - New Rate) × Balance × Remaining Term
Refinance Cost = Prepayment Fee + Stamp Duty + Registration
Net Benefit = Interest Savings - Refinance Costs
📝 How to Calculate
- Enter current loan balance and rate
- Enter remaining loan term
- Enter new loan rate
- Check prepayment fee rate (typically 1.4-1.5%)
- Compare total savings vs costs
📊 Refinance Simulation ($250K balance, 20yr remaining)
| Rate Reduction | Annual Savings | 20yr Total | Prepay Fee(1.5%) | Net Benefit |
|---|---|---|---|---|
| 0.5%p | $1,250 | $25,000 | $3,750 | $21,250 |
| 1.0%p | $2,500 | $50,000 | $3,750 | $46,250 |
| 1.5%p | $3,750 | $75,000 | $3,750 | $71,250 |
| 2.0%p | $5,000 | $100,000 | $3,750 | $96,250 |
💡 Refinance Checklist
- Consider refinancing when rate difference is 0.5%+
- Check prepayment fee waiver period (usually after 3 years)
- Larger balances mean greater refinance benefits
- Longer remaining terms mean more interest savings
- Good credit score can negotiate lower rates
❓ FAQ
Typically 1.4-1.5% of balance within 3 years of the loan. Many banks waive fees after 3 years. Contact your bank for exact fees.
Loan inquiries may temporarily lower your score slightly, but since you're paying off existing debt, overall impact is minimal.
Yes, you can request a rate reduction from your current bank. This often avoids prepayment fees while lowering your rate.
📚 Länderbezogener Rechenleitfaden
Formellogik
Verwendet öffentliche Standards für Finanzen, Darlehen, Quoten und Umrechnung.
Quellenrahmen
Bezug auf öffentliche Standards und übliche Praxis je Land.
Annahmen
Steuern, Gebühren, Zinssätze und Grenzen variieren nach Region/Institut.
Result Interpretation
Nutzen Sie das Ergebnis als Basisszenario. Vor Entscheidungen mit echtem Angebot und lokaler Steuerlage abgleichen.
Lokale Voreinstellung
Währung: EUR
Einheiten: metric
Steuermodell: US payroll estimate
Regulatorischer Hinweis
Dieses Tool nutzt regionale Voreinstellungen zur Schätzung. Reale Vertragsbedingungen und gesetzliche Grenzen variieren je nach Institut und Rechtsraum.
Empfohlene nächste Schritte
- Vergleichen Sie vor Abschluss mindestens 2-3 lokale Anbieter.
- Prüfen Sie Gebühren, Steuerwirkung und Vorfälligkeitsklauseln schriftlich.
- Simulieren Sie ein Stressszenario mit +1-2% Zins.
Vor realen Entscheidungen bitte die aktuellen lokalen Regeln prüfen.