Newcastle Mortgage Tool

Mortgage repayments in Newcastle

Pre-filled with Newcastle averages. See your true monthly cost on a £207,000 property with a £20,700 deposit.

Average Newcastle mortgage: £186,300 — you'll pay £124,355 in interest over 25 years.

Newcastle property market — a vibrant North East city with affordable prices, strong student demand, and growing tech and creative sectors. The calculator below is pre-filled with Newcastle average property prices (£207,000) and a 10% deposit (£20,700), giving an estimated monthly repayment of £1,036 at 4.5% over 25 years. Adjust the sliders to match your actual mortgage offer.

Sources: house prices from ONS UK House Price Index (Jan 2026). Deposit assumes 10% of average price.

Inputs

Property price

£

Deposit

£

Mortgage term

yrs

Annual interest rate

%

Lump sum overpayment

One-off payment to reduce the balance

£


Additional monthly costs

Service charge

£/month

£

Ground rent

£/year

£

Council tax

£/month

£

Buildings insurance

£/month

£

Results

Share your result

🏠Monthly repayment

£1,035.52

Principal & interest only

📈Total interest

£124,355

Over 25 years

💷Total repaid

£310,655

Loan £186,300 + interest

Where your money goes

Total repayment split

Principal (£186,300)

Interest (£124,355)

Annual interest vs principal

Principal repaid

Interest paid


Guide

Mortgage Questions

What is a good mortgage rate in the UK?

In 2025, competitive fixed-rate mortgages range from 3.5% to 5.5%, depending on your LTV, credit score, and the deal length. A lower LTV (larger deposit) typically unlocks better rates. Always compare the total cost over the deal period, not just the headline rate.

What is a service charge and ground rent?

Service charge covers the maintenance of shared areas in a leasehold property — lifts, hallways, gardens, building insurance, and management fees. Ground rent is an annual fee paid to the freeholder. Under the Leasehold Reform Act 2022, ground rents on new leases in England and Wales are now capped at zero (a "peppercorn"), but existing leases may still have charges.

How much deposit do I need for a mortgage?

Most lenders require a minimum 5% deposit, though 10–15% opens up significantly better rates. A 20% or larger deposit gives access to the best deals and avoids higher lending charges. First-time buyers may qualify for government schemes that allow smaller deposits.

Should I get a fixed or variable rate mortgage?

Fixed rates give payment certainty for 2–5 years, protecting you from rate rises. Variable rates (trackers or SVR) may start lower but can increase. In a rising rate environment, fixing provides budget security. In a falling rate environment, trackers can save money.

What is LTV and why does it matter?

Loan-to-value (LTV) is the ratio of your mortgage to the property value, expressed as a percentage. A £270,000 mortgage on a £300,000 property is 90% LTV. Lower LTV means less risk for the lender, which translates to lower interest rates for you. Every 5% drop in LTV can meaningfully reduce your rate.


How We Calculate

1. Monthly repayment — we use the standard annuity formula:
  • Monthly rate r = annual rate ÷ 12
  • Number of payments n = term in years × 12
  • Repayment = loan × r × (1 + r)n ÷ ((1 + r)n − 1)
2. Amortisation schedule — each month:
  • Interest = remaining balance × monthly rate
  • Principal = monthly repayment − interest
  • New balance = old balance − principal
Early payments are mostly interest; over time, more goes to principal. The chart shows this shift year by year.
3. Lump sum overpayment — if you add an overpayment, we subtract it from the balance at the specified month. This reduces the remaining interest and can shorten the term. We compare against the no-overpayment scenario to show you months saved and interest saved.
4. Total monthly cost — mortgage repayment + service charge + ground rent + council tax + insurance. This gives the true monthly outgoing for the property.

All figures are nominal — no inflation adjustment applied. This is an illustrative model, not financial advice.

Back to calculator

Compare by city

Mortgage costs in other UK cities

Explore more tools

Other calculators you might find useful