What is "Mortgage"?
A mortgage is a long-term home loan secured by property. Rate alone is not enough; payment stress and total cost matter too.
Example: A lower rate can still be worse if fees, insurance, or payment volatility are ignored.
🏠 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.
💡Check these out next
Wer sollte dieses Tool nutzen?
Prüfen Sie zuerst passende Nutzerprofile und Einsatzfälle.
Best-fit users
Useful when you want numbers around fixed vs variable rates and down payment pressure.
Comparison-first users
Helpful when you need to compare your current setup against a realistic alternative.
Cash-flow aware users
Good when sustainability matters more than the headline number.
People who need a baseline
Start here when you want a numeric baseline before taking action.
Beispielrechnungen
Konkrete Zahlen erleichtern die Entscheidung.
Scenario 1
Run a realistic baseline first
Result
See the first decision threshold quickly
A rough baseline is better than guessing.
Scenario 2
Change one major variable
Result
Watch how decision quality changes
Structure often matters more than the headline number.
Scenario 3
Use a more conservative assumption
Result
Stress-test the plan before committing
Conservative assumptions usually create better real-world plans.
Vergleich ähnlicher Situationen
X vs Y, Leistbarkeit und günstiger Zeitpunkt im Schnellvergleich.
X vs Y
Best for
When two choices look similar on the surface
Watch for
The hidden structure often matters more than the headline number.
Decision rule
Cash flow and sustainability usually matter more than optics.
How much is really affordable?
Best for
When approved amount and healthy amount are not the same
Watch for
Maximum eligibility is rarely the same as safe capacity.
Decision rule
Set the monthly burden you can carry first, then build around it.
When is this favorable?
Best for
When timing or conditions change the answer
Watch for
Delay can become more expensive than expected.
Decision rule
Prepared structure and consistency usually beat perfect timing.
Expert Tip
Reducing your rate by just 0.5% on a $300,000 loan saves ~$30,000 over 30 years. Compare multiple banks and use rate reduction rights. Also, fixed principal repayment saves 10-15% in total interest vs. fixed payment.
— Real Estate Finance Expert
Häufige Fragen
Start with the assumption that changes the result most. This tool is most useful for setting a decision baseline, not pretending the first number is perfect.
For $300,000 at 4% over 30 years with fixed payment: ~$1,430/month. With fixed principal: starts at $1,830 and decreases. Fixed principal saves ~$15,000 in total interest.
💡 A 0.5% rate decrease saves about $80/month!
Fixed principal saves more on total interest but has higher initial payments. If you need stable payments now, choose fixed payment. You can always make extra payments later when you have more income.
💡 Check prepayment penalties before refinancing!
LTV is loan-to-value ratio (loan limit vs property value), DTI is debt-to-income (loan payments vs income), DSR is debt service ratio (all loan payments vs income). Regulated areas limit LTV to 40-50% and DSR to 40%.
💡 Use our calculator to check your DSR too!
Choose fixed if you expect rates to rise, variable if you expect them to fall. Mixed rate (fixed for 3-5 years, then variable) is a good middle ground. For long-term loans, fixed rate is safer.
Most banks charge prepayment fees (0.5-1.4%) within the first 3 years. After 3 years, it is usually waived. Some banks allow 10-20% annual prepayment without fees.
📌 Key Takeaways
- 💰A 0.5% rate reduction saves tens of thousands over 30 years
- 📉Fixed principal saves 10-15% on total interest vs fixed payment
- 📋Check LTV and DSR regulations before applying
- ⏰Prepayment penalties often waived after 3 years
What is a Mortgage?
A mortgage is a loan secured by real estate property. Typically, you can borrow 40-70% of the property value, and monthly payments vary significantly based on interest rates and repayment methods.
Repayment Method Comparison
| Type | Fixed Payment | Fixed Principal |
|---|---|---|
| Monthly Payment | Same every month | Starts high, decreases |
| Total Interest | Relatively more | Relatively less |
| Advantages | Predictable payments | Save on total interest |
Interest Rate Types
- Fixed Rate: Interest rate stays the same throughout the loan
- Variable Rate: Changes with market rates (usually 6 months to 1 year)
- Mixed Rate: Fixed for initial years, then variable
Things to Check When Borrowing
- LTV (Loan-to-Value): Maximum loan amount vs property value
- DTI (Debt-to-Income): Debt repayment ability vs income
- DSR (Debt Service Ratio): All loan payments vs income
- Prepayment penalty: Fees for early repayment
📚 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.