A £120,000 salary puts you in the top 2% of UK earners and provides substantial mortgage borrowing power — enough to buy across London and most of the country without a joint income. However, the personal allowance taper (which starts at £100,000) means your effective tax rate on part of this income is 60%, making pre-mortgage tax planning an important consideration. Here’s the full picture.
How Much Can You Borrow?
| Lender Type | Income Multiple | Maximum Mortgage |
|---|---|---|
| Most high-street lenders | 4–4.5× | £480,000–£540,000 |
| Building societies | Up to 5× | £600,000 |
| Specialist / professional lenders | 5.5× | £660,000 |
With a Deposit
| Deposit % | Deposit on £550k Property | Mortgage Needed | Maximum Purchase Price |
|---|---|---|---|
| 5% | £27,500 | £522,500 | £533,000–£568,000 |
| 10% | £55,000 | £495,000 | £533,000–£600,000 |
| 15% | £82,500 | £467,500 | £550,000–£635,000 |
| 20% | £110,000 | £440,000 | £600,000–£675,000 |
Monthly Payments
| Mortgage Amount | Rate | Term | Monthly Payment | % of Take-Home |
|---|---|---|---|---|
| £480,000 | 4.5% | 25 years | £2,669 | 42% |
| £480,000 | 4.5% | 30 years | £2,432 | 38% |
| £540,000 | 4.5% | 25 years | £3,003 | 47% |
| £540,000 | 4.5% | 30 years | £2,735 | 43% |
| £480,000 | 4.0% | 30 years | £2,292 | 36% |
Your monthly take-home on £120,000 is approximately £6,346 (2026/27, with tapered personal allowance of £2,570, no pension contributions, no student loan). With pension contributions reducing income to £100,000, take-home rises and net income improves.
What Can You Buy on £120k?
| Region | Budget (10% deposit) | What You Can Buy |
|---|---|---|
| North East | £533,000–£600,000 | Premium detached, best areas |
| North West | £533,000–£600,000 | Large executive home, top suburbs |
| Yorkshire | £533,000–£600,000 | 5 bed detached, premier areas |
| Wales | £533,000–£600,000 | Large country house or luxury home |
| West Midlands | £533,000–£600,000 | Premium homes in Solihull, Sutton |
| East Midlands | £533,000–£600,000 | Executive detached |
| Scotland | £533,000–£600,000 | Premium Edinburgh or rural estate |
| Northern Ireland | £533,000–£600,000 | Executive home |
| South West | £533,000–£600,000 | 4 bed house, coastal towns or Bath |
| South East | £533,000–£600,000 | 3–4 bed house in Surrey, Kent, Essex |
| London | £533,000–£600,000 | 2-bed flat in zone 2 or house in zone 5–6 |
Budget Breakdown
| Monthly Budget on £120k | Amount |
|---|---|
| Take-home pay (with tapered allowance) | £6,346 |
| Mortgage (£480k, 30yr, 4.5%) | -£2,432 |
| Council tax | -£180 |
| Utilities | -£185 |
| Food | -£350 |
| Transport | -£170 |
| Insurance (home + life) | -£130 |
| Phone / broadband | -£65 |
| Remaining | ~£2,834 |
Strong residual income — at this level, financial planning around pension, ISA, and investment structure becomes essential.
The Personal Allowance Taper — Critical at £120k
The most important financial fact for a £120k earner is the personal allowance taper:
| Income | Personal Allowance | Effective Marginal Rate |
|---|---|---|
| Up to £100,000 | £12,570 (full) | 42% (40% tax + 2% NI) |
| £100,001–£125,140 | Reduces by £1 per £2 | 60% effective rate |
| Above £125,140 | £0 (fully withdrawn) | 45% (additional rate) + 2% NI |
At £120,000, your personal allowance has been reduced by £10,000 (from £12,570 to £2,570). You are paying the 60% effective rate on £20,000 of your income (between £100k and £120k).
Solution: Pension contributions of £20,000 reduce adjusted net income to £100,000, recovering the full personal allowance and cutting your tax bill by approximately £5,000/year — at a 60% effective rate of relief.
Boosting Your Buying Power
Joint Purchase
Two earners each on £120,000 could borrow £960,000–£1,080,000 — enough for a family home in most of London or a significant property anywhere in the UK.
Maximise Your Deposit
| Extra Deposit Saved | Effect on Budget |
|---|---|
| £25,000 more | Improved LTV on a £550k property |
| £55,000 more | Hits 80% LTV — premium rate access |
| £110,000 more | 75% LTV — best available rates |
Professional Mortgage Products
At £120k, enhanced professional mortgage products from private banks and specialist lenders are accessible. Some offer 5× or 5.5× income, and private banking relationships can yield bespoke terms above standard market products.
Tax Considerations on £120k
| Tax Item | Amount |
|---|---|
| Income tax (with tapered allowance) | ~£39,432 |
| National Insurance | ~£4,411 |
| Total deductions | ~£43,843 |
| Monthly take-home | ~£6,346 |
| Marginal rate on £100k–£120k band | 60% effective |
Pension contributions of £20,000 (to reach £100k adjusted net income) save approximately £12,000 in income tax (at 60% effective relief) and recover the full £12,570 personal allowance.
Tips for Maximising Your Mortgage on £120k
- Make pension contributions before applying — reducing adjusted net income to £100k saves ~£12,000 in tax and improves your effective net income
- Target 80% LTV — the rate difference over a £480k–£540k mortgage is significant over 25–30 years
- Consider a private bank or specialist lender — at this income, private banking offers bespoke products not available on the standard market
- Use a whole-of-market mortgage broker — income multiples vary significantly; a broker finds the best offer for your profile
- Plan the remortgage from the start — equity builds faster at higher incomes with overpayments; model a 5-year and 10-year equity position
What Does £500,000–£600,000 Buy in 2026?
| Region | What £500,000–£600,000 buys |
|---|---|
| North West (Cheshire, Altrincham, Wilmslow) | 5-bed detached in top areas |
| Yorkshire (Harrogate, Ilkley, Knaresborough) | Premium detached |
| Midlands (Solihull, Knowle, Stratford-upon-Avon) | Premium family home |
| South Wales (Penarth, Cowbridge) | Premium house |
| Scotland (Edinburgh — Trinity, Morningside) | Substantial townhouse |
| South West (Bath, Bristol Clifton outskirts, Dorset coast) | 4 bed house |
| South East (Surrey, Berkshire, parts of Kent) | 3–4 bed house |
| London zones 2–3 | 2–3 bed flat |
| London zones 4–5 | 3 bed house |
Monthly Repayment at £480,000
| Rate | 25-year term | 30-year term |
|---|---|---|
| 4.0% | £2,536 | £2,292 |
| 4.5% | £2,669 | £2,432 |
| 5.0% | £2,807 | £2,576 |
| 5.5% | £2,947 | £2,724 |
On £120,000 (£6,346/month take-home without pension optimisation), a £2,432 monthly mortgage takes 38% of net income. With pension contributions reducing income to £100k, take-home improves and this proportion falls further.
Building Equity on £120,000
| Monthly overpayment | Term reduction (25yr, 4.5%) | Interest saved |
|---|---|---|
| £300 | ~2 years | ~£60,000 |
| £500 | ~3.5 years | ~£96,000 |
| £1,000 | ~6 years | ~£170,000 |
Overpaying aggressively at this income level is highly effective — especially if your mortgage rate exceeds the return on savings.