Money Saving Expert Mortgage Calculator UK

UK lenders typically offer 4 to 4.5 times your annual household income, though this varies based on your circumstances and the lender's criteria.

Standard income multiples:

• Conservative lending: 4x annual income (safer approval)
• Standard lending: 4.5x annual income (most common)
• Higher multiples: Up to 5-5.5x for high earners or professionals
• Joint applications: Based on combined household income

Income examples and borrowing capacity:

• £25,000 income: £100,000-£112,500 mortgage
• £35,000 income: £140,000-£157,500 mortgage
• £50,000 income: £200,000-£225,000 mortgage
• £75,000 income: £300,000-£337,500 mortgage
• £100,000 income: £400,000-£450,000 mortgage

Factors that increase borrowing:

• Larger deposits: 20%+ deposits may unlock higher multiples
• Excellent credit: Clean credit history helps
• Low expenses: Minimal existing debts and commitments
• Stable employment: Permanent contract in secure industry
• Professional roles: Some lenders offer 5-6x for doctors, lawyers, etc.

Factors that reduce borrowing:

• High monthly expenses and existing credit commitments
• Poor or limited credit history
• Self-employment or contract work
• Small deposit (below 10%)
• Multiple dependents or childcare costs

Affordability stress tests:

Lenders must ensure you can still afford repayments if:

• Interest rates rise by 2-3%
• Your circumstances change (income reduction, expenses increase)
• You have emergency costs or life changes

Smart planning tip: Just because you can borrow a certain amount doesn't mean you should. Consider your lifestyle, future plans, and comfort level with debt when deciding how much to borrow.

The main difference is what you pay each month and whether you gradually own more of your property or must repay the full amount at the end.

Repayment Mortgages (Capital & Interest):

• Monthly payments: Include both interest and principal (capital)
• Ownership: Gradually build equity in your property
• End of term: Mortgage fully paid off, you own the property outright
• Most common: 95%+ of UK residential mortgages
• Security: Guaranteed to own property if payments maintained

Interest-Only Mortgages:

• Monthly payments: Only pay interest, not reducing the loan
• Ownership: Don't build equity through monthly payments
• End of term: Must repay full original loan amount
• Lower payments: Monthly cost 40-50% lower than repayment
• Repayment vehicle needed: Must have plan to repay capital

Example comparison (£200,000 loan, 5.5%, 25 years):

• Repayment mortgage: £1,225/month, own property at end
• Interest-only: £917/month, still owe £200,000 at end
• Difference: Save £308/month but must repay £200,000 somehow

Who uses interest-only mortgages?

• Buy-to-let investors: Tax advantages and property appreciation strategy
• High earners: With solid investment plans or savings strategies
• Temporary arrangements: Planning to sell or downsize before term ends
• Equity release: Older homeowners using property value

Repayment vehicles for interest-only:

• Investments: ISAs, stocks, or investment portfolios
• Savings: High-interest savings accounts
• Sale of property: Planning to downsize or sell
• Other assets: Sale of business or other properties
• Inheritance: Expected future windfall (risky)

Availability challenges:

• Residential interest-only mortgages increasingly restricted
• Require proof of credible repayment strategy
• Often need 25%+ deposit
• More common for buy-to-let than residential
• Stricter affordability checks

Recommendation: For most homebuyers, repayment mortgages are safer and ensure you'll own your home outright. Interest-only suits specific circumstances where you have solid investment plans and understand the risks.

Yes! This calculator is perfect for remortgaging calculations. Simply enter your current mortgage details to compare rates and see potential savings.

How to use for remortgaging:

• Mortgage amount: Enter your current outstanding balance
• Property value: Use current market value (get valuation)
• Current rate: Your existing interest rate
• New rate: Compare with available remortgage rates
• Remaining term: Years left on current mortgage

When to consider remortgaging:

• Fixed rate ending: 3-6 months before your deal expires
• Better rates available: Rates significantly lower than your current rate
• Improved LTV: Your property value increased or balance reduced
• Release equity: Need funds for home improvements or debt consolidation
• Change mortgage terms: Extend or reduce term, change to fixed/variable

Potential savings from remortgaging:

Example: £200,000 mortgage, 20 years remaining

• Current rate 6.5%: £1,494/month
• Remortgage to 5%: £1,320/month
• Monthly saving: £174
• Annual saving: £2,088
• Total saving over 2 years: £4,176

Costs to consider:

• Early repayment charge (ERC): Often 1-5% if exiting fixed deal early
• Arrangement fee: £500-£2,000 for new mortgage
• Valuation fee: £100-£1,500 depending on property value
• Legal fees: £500-£1,000 (sometimes free with remortgage deals)
• Broker fees: £300-£500 if using mortgage broker

Is remortgaging worth it? Calculate break-even:

• Total costs: Add up all remortgaging fees
• Monthly savings: Difference between old and new payments
• Break-even point: Costs ÷ monthly savings = months to break even
• Example: £2,000 costs ÷ £174 saving = 11.5 months break-even

Remortgaging vs product transfer:

• Product transfer: Stay with current lender, lower fees, faster process
• Remortgaging: Switch lenders, potentially better rates, more options
• Best practice: Always compare both options before deciding

Improving your LTV for better rates:

• Property value increases naturally improve LTV
• Overpayments reduce balance and improve LTV
• Better LTV unlocks cheaper mortgage rates
• Each 5% LTV improvement can save 0.1-0.3% on rate

Timing tip: Start comparing remortgage deals 3-6 months before your current rate ends. This gives you time to find the best deal, complete applications, and avoid reverting to your lender's expensive standard variable rate (SVR).

Mortgage overpayments can save you tens of thousands in interest and allow you to own your home years earlier. Even small regular overpayments make a significant difference.

How overpayments work:

• Extra payments go directly toward reducing your mortgage balance
• Lower balance means less interest charged on remaining debt
• Compound effect: savings accelerate over time
• Can reduce term or monthly payments (your choice)

Real savings examples:

£200,000 mortgage, 5.5% interest, 25 years:

• Standard payment: £1,225/month, £167,500 total interest
• +£100/month overpayment: Save £23,000 interest, pay off 3 years early
• +£200/month overpayment: Save £39,000 interest, pay off 5.5 years early
• +£500/month overpayment: Save £73,000 interest, pay off 10 years early

£300,000 mortgage, 6% interest, 30 years:

• Standard payment: £1,799/month, £347,515 total interest
• +£250/month overpayment: Save £80,000 interest, pay off 6 years early
• +£500/month overpayment: Save £136,000 interest, pay off 10 years early

Overpayment limits and rules:

• Typical allowance: 10% of outstanding balance per year
• Penalties: Charges if you exceed allowance (usually 1-5%)
• Fixed rate periods: Stricter limits during fixed terms
• Variable/tracker rates: Often allow unlimited overpayments
• After fixed period: Usually unlimited overpayments allowed

Ways to overpay:

• Regular monthly overpayments: Most effective long-term approach
• Annual lump sums: Bonuses, inheritance, tax refunds
• Salary increases: Apply raises directly to mortgage
• Savings: Use extra cash rather than low-interest accounts

Should you overpay or save?

• Overpay if: Mortgage rate higher than savings rate (usually the case)
• Save if: You have no emergency fund (build 3-6 months expenses first)
• Pay debts first: Clear credit cards and high-interest loans before overpaying
• Pension contributions: Consider tax relief benefits vs mortgage savings

Flexibility considerations:

• Money is locked in: Can't easily access overpaid amount
• Offset mortgages: Alternative allowing flexibility to access savings
• Payment holidays: Some lenders allow breaks after building overpayment buffer
• Life changes: Keep some cash accessible for emergencies

Best strategy for overpaying:

• Start early: Overpayments in first few years save the most
• Be consistent: Regular small amounts beat occasional large sums
• Check terms: Ensure no penalties and understand limits
• Stay flexible: Only overpay what you can comfortably afford
• Track progress: Use our calculator to see savings grow

Power of overpaying: Every £100 extra you pay monthly on a £200,000 mortgage at 5.5% saves you over £20,000 in interest and lets you own your home 3 years sooner. That's a guaranteed return far better than most savings accounts!