💡 Quick Answer
If you earn $80,000/year, most lenders will approve you for:
→ $280,000 – $400,000
But that’s just a surface estimate.
Your real borrowing power depends on:
- Debt-to-income ratio (DTI)
- Credit score
- Monthly obligations
- Deposit size
👉 Use the calculator below to get a more accurate estimate.
🧮 Mortgage Affordability Calculator
Find out how much you may be able to borrow based on your income, debts, deposit, and loan assumptions. This calculator gives you a quick estimate of your likely mortgage amount, monthly payment, and home buying budget.
Use it as a planning tool, not a final approval.
Disclaimer: This calculator provides general estimates only and should not be considered financial advice or a mortgage offer. Lending criteria, taxes, insurance, fees, and credit assessment can materially affect final approval.
What Do Banks Actually Use to Calculate Your Loan?
Banks don’t just multiply your salary.
They run your numbers through risk models focused on one thing:
👉 Can you afford repayments long-term?
The Core Formula: Debt-to-Income Ratio (DTI)
Your DTI determines how much lenders are willing to risk on you.
DTI=Total Monthly DebtGross Monthly IncomeDTI = \frac{\text{Total Monthly Debt}}{\text{Gross Monthly Income}}
Industry Benchmarks:
- < 36% → Strong borrower (best rates)
- 36% – 43% → Acceptable
- 43%+ → Risky (reduced borrowing)
Borrowing Power Based on Income (Real Data)
| Income | Conservative (3.5x) | Aggressive (5x) |
|---|---|---|
| $50,000 | $175,000 | $250,000 |
| $75,000 | $262,500 | $375,000 |
| $100,000 | $350,000 | $500,000 |
| $150,000 | $525,000 | $750,000 |
👉 These are ceilings, not guarantees.
The 28/36 Rule (What Lenders Actually Follow)
Lenders use two thresholds:
- 28% Rule → Max housing costs vs income
- 36% Rule → Max total debt vs income
Example:
Income: $6,000/month
- Max housing: $1,680
- Max total debt: $2,160
If you’re already paying:
- $500 car loan
- $300 student loan
→ Your mortgage budget shrinks fast.
The 5 Factors That Actually Decide Your Borrowing Power
1. Income Type (This Changes Everything)
- Salaried → clean approval
- Self-employed → 2-year average
- Commission-based → heavily discounted
👉 Inconsistent income = lower loan offer
2. Credit Score (Silent Multiplier)
- 760+ → best rates + max borrowing
- 700–759 → good
- <680 → reduced loan + higher costs
Even a small drop = thousands lost in borrowing power.
3. Existing Debt (The Killer)
Every monthly payment reduces your borrowing capacity.
- Credit cards
- Car loans
- Student loans
👉 Pay these down BEFORE applying.
4. Deposit Size
- 20%+ → no PMI, stronger profile
- <20% → higher monthly costs
Bigger deposit = more borrowing flexibility.
5. Interest Rates
Higher rates = lower borrowing power.
Even a 1% increase can reduce your loan size by 10–15%.
Real Example Breakdown
Let’s model a realistic borrower:
- Income: $100,000
- Monthly debts: $800
- Credit score: 740
- Deposit: 15%
Result:
- Max borrowing: ~$420,000
- Monthly payment: ~$2,400
👉 Same person with no debt?
→ ~$480,000+
Common Mistakes That Kill Your Approval
❌ Buying a Car Before Applying
Instant DTI spike → reduced loan
❌ Ignoring Variable Income
Bonuses ≠ guaranteed income
❌ Using All Savings for Deposit
Leaves no buffer → risk signal
How to Increase Your Borrowing Power (Fast)
1. Kill Small Debts
Pay off:
- credit cards
- personal loans
2. Improve Credit Score
- Fix errors
- Lower utilization
3. Increase Deposit
Even +5% makes a difference
4. Delay Big Purchases
No financing before mortgage approval
What You Should Borrow vs What You Can
Banks will push you to the max.
Don’t take it.
Ask yourself:
- Can I handle rate increases?
- Do I want financial flexibility?
- Am I planning kids / lifestyle changes?
👉 Smart buyers borrow below their max.
📩 Get a Personalised Borrowing Estimate
Want a more accurate number?
- Custom borrowing estimate
- Monthly repayment breakdown
- Lender options
Frequently Asked Questions
How much mortgage can I get on $100k salary?
Typically $350k–$500k, depending on debt and credit score.
Can I borrow 5x my salary?
Yes, but usually only with:
- strong credit
- low debt
- stable income
What salary do I need for a $500k house?
Roughly $100k–$140k, depending on your financial profile.
Does debt reduce borrowing power?
Yes. Every monthly payment directly lowers your loan amount.
Final Thought
Your borrowing power isn’t a fixed number.
It’s a moving target based on:
- your financial behavior
- your risk profile
- how lenders model your future
👉 Control those variables, and you control the outcome.
