Are you mortgage-ready as a firefighter?
See how basic pay, overtime, on-call income and allowances might be counted under cautious, typical and generous lender styles, what deposit and LTV you have, how a rate rise would feel and how ready your evidence is.
Your income and purchase
Free · privateThe property
More options
How three lender styles might count your income
Editable assumptionsCautious lender
Typical lender
Generous lender
Borrowing range across income multiples
Borrowing = counted income x multiple. It is an illustration of how income might be treated, not an agreement in principle. Affordability checks, credit history, commitments and valuation decide any real offer. Read the firefighter mortgage guide or the simpler mortgage borrowing calculator.
Educational planning tool, not mortgage advice, an agreement in principle or an offer. Lender policies vary and change. Your home may be repossessed if you do not keep up repayments on your mortgage.
Illustrative planning estimate based on published rules, not financial, legal, pension or tax advice. Your payroll record, contract and scheme administrator control your actual position.
What the tool shows you
The Borrowing tab lays out three lender styles (cautious, typical and generous) as editable assumptions: how much overtime, on-call pay and allowances each counts, how much history each needs and what income multiple it applies. A chart shows borrowing at multiples from 3.5 to 5.5 times for each style against the loan you need. Deposit and LTV shows your loan-to-value, the common product tiers and how much more deposit reaches the next one. Stress test shows the monthly repayment at your rate and at a higher one, the share of your estimated take-home, and what happens to borrowing if overtime halves or stops. Evidence readiness scores how well you could evidence your overtime and ticks items automatically from your history. The paid Mortgage Readiness Pack adds a 24-month overtime log, a three-purchase comparison, an evidence pack checklist, tailored adviser questions and a printable summary.
What "mortgage-ready" means for a firefighter
A firefighter's pay is mostly predictable: a national basic salary from the NJC table, changed by pay awards on 1 July, plus contractual extras. That is an advantage when you apply for a mortgage, because lenders like stable, verifiable income. What makes firefighter applications different is variable pay — overtime, on-call earnings, flexible-duty payments and local allowances — which lenders treat with more caution than basic salary. This tool helps you see the gap between what you earn and what a lender might count, and it shows how prepared your evidence is before you talk to an adviser.
It works alongside the site's firefighter mortgage borrowing calculator, which builds a single illustrative range. The readiness check adds three lender styles, deposit and loan-to-value, and an evidence score. For the full picture read the firefighter mortgage guide, and if you are saving a deposit see the overtime-to-deposit tool.
How lenders may treat each part of your income
Lender criteria differ and change, so treat the following as typical patterns rather than rules. Every figure in the tool that reflects lender behaviour is an editable assumption for that reason.
| Income type | How it is often treated | What helps |
|---|---|---|
| Basic pay | Usually counted in full when your job is permanent and you are past any probation. | Recent payslips, contract or employer letter. |
| Guaranteed / contractual allowances | Often counted, sometimes in full, if confirmed by your employer. | Allowance letters, consistent payslip lines. |
| Overtime | Commonly averaged over a period of payslips or P60s and counted in part or in full; some lenders want 12 to 24 months of history. | 12–24 months of payslips, P60s, steady pattern. |
| On-call earnings | May be treated like overtime or variable income; some lenders may not count it or want a longer record. | Contract, payslips and P60 showing a stable pattern. |
| Discretionary or one-off payments | Frequently discounted heavily or excluded. | Employer letter explaining regularity. |
Broker commentary in 2026 often describes non-guaranteed overtime being averaged over a period and counted at a reduced share, while contractual overtime can be counted more fully — but these descriptions come from secondary sources and individual lenders differ. Ask a regulated adviser which lenders suit your pattern.
Income multiples: what 4 to 4.5 times really means
Lenders commonly express a starting point as a multiple of gross annual income. For many high-street lenders that starting point is around four to four and a half times income, and the Bank of England's Financial Policy Committee has a recommendation limiting the share of new mortgages that lenders make at or above 4.5 times income to 15%, which is one reason 4.5× is a common practical ceiling. Some lenders go higher for certain applicants; others go lower once affordability checks are applied. The multiple is a ceiling, never a promise: your outgoings, debts, dependants, credit history, term and the interest rate used for stress testing decide the actual limit.
The tool defaults to 4× for the cautious style and 4.5× for the typical and generous styles, lets you change every multiple, and charts 3.5× to 5.5× so you can see the sensitivity. It compares the loan you would need for your target property with the income each style might count.
Worked example: the effect of overtime evidence
A competent firefighter on £40,358 who averages ten overtime hours a month at £27.65 earns about £3,318 a year in overtime. With no allowances and no other income:
- Cautious lender counts basic pay only: £40,358. At 4× to 4.5× that is £161,432 to £181,611.
- Typical lender (with 12+ months of steady overtime, counted at 50%): £40,358 + £1,659 = £42,017, giving £168,068 to £189,077.
- Generous lender (overtime counted in full): £43,676, giving £174,704 to £196,542.
The spread between cautious and generous is about £15,000 of borrowing at 4.5×. Now compare with the property. A £250,000 home with a £25,000 deposit needs a £225,000 loan — about 5.35 times the typical figure of £42,017, which is above the usual range. A £200,000 home with a £20,000 deposit needs £180,000, about 4.28 times, which sits at the upper end of the range. Both have a 90% loan-to-value. The lesson is not that you should chase overtime just before applying; it is that a documented overtime history changes how much of it counts, so start keeping evidence early.
Deposit and loan-to-value
Loan-to-value (LTV) is the loan divided by the property price. A £20,000 deposit on £200,000 is 10% and an LTV of 90%. Lenders commonly offer product and rate tiers at LTV steps, so being just under a boundary can be worth checking with an adviser. The tool shows your deposit percentage and LTV for the price you enter, the common tier edges (60, 75, 80, 85, 90 and 95% LTV) and how much extra deposit reaches the next one. It does not claim what rate you would receive: rates and exact tier boundaries change constantly and vary by lender.
The evidence readiness score
The score is a simple weighted checklist, not a lender scorecard. It rewards the items advisers and lenders commonly ask for: recent payslips, twelve months of payslips, P60s, an employer reference or confirmation letter, overtime history over twelve and twenty-four months, letters confirming allowances, a steady overtime pattern, being past probation, and a clean credit file. Use the lowest-scoring items as a to-do list: many can be fixed in an afternoon by downloading payslips or asking payroll for a letter. The paid Mortgage Readiness Pack turns the checklist into a full evidence pack with an overtime history log and an adviser question list.
Common mistakes
- Assuming overtime is counted in full. Many lenders reduce or average it; model a cautious case too.
- Using a single busy month. Averaging means a spike is diluted, and a short history may not count at all.
- Forgetting the pay award timing. Pay rises from 1 July; arrears can appear as a one-off that lenders may exclude.
- Not checking your credit file. Small errors or missed payments can matter more than a percentage point of overtime.
- Treating a multiple as an offer. Affordability checks can reduce it substantially.
- Leaving evidence to the last minute. P60s and employer letters can take time; ask early.
Related guides and tools
To see what you take home before a mortgage, run the firefighter pay report and read the take-home pay guide. For a broader plan, the Pay Planner Pro models overtime month by month, and the payslip guide explains the lines lenders will read.
Frequently asked questions
Can a firefighter get a mortgage using overtime?
Often yes, but lenders differ. Basic pay is normally counted in full; overtime is commonly averaged over a period of payslips or P60s and only some or all of it counted, and some lenders ask for a year or more of history first. Ask a regulated adviser how a specific lender treats public-sector overtime.
How much can a firefighter borrow for a mortgage?
Many lenders start from around 4 to 4.5 times income, with some going higher in particular cases, but this varies by lender and is capped by affordability checks. On the 2026 competent firefighter salary of £40,358 that is roughly £161,000 to £182,000 from basic pay alone, before any overtime is counted.
Do lenders count on-call retainer and allowances?
Practice varies. Contractual, regular payments confirmed by your employer are usually easier to include than discretionary or one-off payments. Lenders may ask for a period of history and an employer letter. The tool lets you separate guaranteed from discretionary allowances so you can see the effect.
How many payslips or years of overtime do I need?
There is no single rule. Lenders commonly ask for recent payslips (often three months) and P60s, and may want 12 to 24 months of overtime history before counting it. Use the readiness checklist to see what you already have and what to request from payroll.
What is a good deposit for a firefighter's mortgage?
A larger deposit lowers your loan-to-value (LTV), and lenders tend to price and offer products in LTV tiers, so a few percentage points can matter. The tool shows your deposit percentage and LTV; a broker can show which tier boundaries are near your position.
Is this an agreement in principle or mortgage advice?
No. It is an educational planning tool. Only a lender can give an agreement in principle or offer, and only a regulated adviser can advise you on a product. Your home may be repossessed if you do not keep up repayments on a mortgage.
Are my figures stored or shared?
No. Everything is calculated in your browser. Analytics record only broad, non-identifying buckets, never exact salary, overtime, deposit or property figures.
What is the rate stress test?
It recalculates your monthly repayment at your chosen rate plus a rise (2 percentage points by default) and shows it against your estimated take-home and commitments. Lenders run their own stress tests, so this is a check of your own comfort rather than a lender calculation.
Are the lender scenarios real lender rules?
No. They are clearly labelled, editable planning assumptions (how much overtime is counted, how much history is needed, the income multiple). Lender policy varies and changes, so change every number to match what an adviser tells you.
Sources and assumptions
- LGA — NJC firefighter pay circulars: basic pay and overtime rates effective 1 July 2026.
- Bank of England — Financial Policy Committee: the loan-to-income flow limit recommendation (no more than 15% of new mortgages at 4.5× income or above). Confirmed in reporting of the recommendation; check the current policy statement on the Bank's site.
- MoneyHelper — buying a home: general, impartial guidance (not used for any figure in the tool).
- Unverified / illustrative: lender treatment of overtime, on-call pay and allowances (percentages, history periods) is drawn from secondary broker commentary, not a primary source, and is presented as editable assumptions that vary by lender. Income multiples of 4–4.5× are typical starting points, not guarantees. LTV tier edges shown are common market practice, not a rule for any lender. Interest rates and terms are your inputs. Take-home pay uses 2026/27 tax, National Insurance and FPS 2015 pension.
- This is an educational tool, not mortgage advice. Your home may be repossessed if you do not keep up repayments on your mortgage.