Your basic salary looks fine on paper, but it is the overtime that really pays the bills. Then the mortgage question hits: can I get a mortgage with overtime income, or will a lender pretend that extra money does not exist? The honest answer is yes, you often can – but not every lender treats overtime fairly, and that is where people get caught out.
Some lenders will use all of it, some will use part of it, and some will ignore it completely unless the evidence is strong. That difference can have a big impact on how much you can borrow and whether the home you want is actually within reach.
Can I get a mortgage with overtime income in the UK?
Yes, in many cases you can get a mortgage with overtime income in the UK. Overtime is not automatically a problem. What matters is whether the lender believes it is genuine, regular and likely to continue.
This is where the industry gets murky. A lot of borrowers assume mortgage affordability is based on salary alone. It is not that simple. Lenders assess income in different ways, and overtime sits in the category of variable earnings. Variable income can be accepted, but it usually needs more proof than basic pay.
If your overtime has been consistent over time, appears clearly on your payslips and is supported by your bank statements or employer reference, you may be in a strong position. If it is irregular, recent or inflated by a one-off busy period, lenders may take a more cautious view.
How lenders assess overtime income
Lenders are not just asking how much you earned last month. They are asking whether that level of income is reliable enough to support mortgage payments for years.
That is why they tend to look for a pattern. In many cases, they will ask for the latest three months’ payslips, sometimes six, and occasionally a longer history if your income fluctuates. They may also look at your P60 to compare your annual earnings against your contracted salary. If there is a clear gap, overtime may help explain it.
Some lenders will use 100% of overtime income if it has been regular for a decent period. Others might average it over three, six or twelve months. Some cap the amount they will use. For example, they may include only 50% or 60% of overtime to allow for the risk that it drops in future.
That means two people with the same job and the same total income can get very different mortgage outcomes depending on the lender chosen. This is exactly why going direct to one bank can be a costly mistake. One lender’s no can be another lender’s yes – and one lender’s low offer can be another lender’s stronger one.
What counts as acceptable overtime income?
Acceptable overtime usually has three features. It is regular, it is evidenced, and it looks sustainable.
Regular does not always mean identical every month. Plenty of jobs have seasonal peaks, shift-based patterns or rotational overtime. The key is whether there is a recognisable track record rather than random spikes.
Evidenced means the figures show up properly in the paperwork. If your payslips, bank statements and P60 tell a consistent story, that helps. If the numbers are all over the place or the money does not match what lands in your account, questions follow.
Sustainable is the big one. Lenders want confidence that your overtime is not disappearing the moment you complete on a mortgage. If your employer can confirm overtime is a normal part of your role, that can strengthen the case. If your sector regularly depends on overtime – healthcare, logistics, manufacturing, emergency services and some public sector roles are common examples – lenders may be more comfortable, provided the history stacks up.
When overtime income causes problems
Overtime is useful, but it is not magic. There are situations where it causes lenders to slow down or reduce what they are willing to offer.
The first issue is short history. If you only started earning overtime in the last month or two, many lenders will not put much weight on it. They want to see that it is established, not temporary.
The second is inconsistency. If one month shows a big overtime payment and the next two show almost nothing, the lender may average it down hard or ignore it. From their point of view, that is risk management.
The third issue is affordability under scrutiny. Even where overtime is accepted, lenders still test whether the mortgage remains affordable if rates rise or household costs increase. If your case is already tight, they may be less generous with variable income.
There is also the simple fact that some lenders are stricter than others. This is not always about your profile. Sometimes it is just their policy.
What documents do you usually need?
If you are asking can I get a mortgage with overtime income, paperwork matters more than optimism. Most lenders will want recent payslips and bank statements as standard. They may also ask for your latest P60 and, in some cases, an employer’s reference confirming your basic salary, overtime structure and whether it is expected to continue.
The cleaner your paperwork, the easier the case. If your payslips clearly separate basic pay from overtime, great. If your bank statements show salary credits landing consistently, even better. If your overtime is paid in a messy way, or the references are vague, it can create avoidable friction.
This is one reason buyers lose time with poor applications. They submit just enough to start the process, not enough to support the argument. Then the lender asks questions, the underwriter pushes back, and the whole thing drags.
How much can overtime increase your borrowing?
It depends on how much of the overtime a lender is willing to use and how that feeds into their affordability model. There is no single formula across the market.
Say your basic salary is £32,000 and your annual overtime adds another £6,000. If a lender uses all of that overtime, your assessed income could be £38,000. If another lender uses only half, they may assess you at £35,000 instead. That gap can translate into a meaningful difference in maximum borrowing.
And it is not just income multiples. Lenders also look at credit commitments, childcare costs, household spending, dependent children and stress-tested monthly payments. So overtime can boost borrowing power, but it sits inside a wider affordability calculation.
That is the part many borrowers miss. They focus on headline rates and forget that lender criteria decide whether the deal is even available to them in the first place.
How to improve your chances if part of your pay is overtime
You do not need to game the system. You do need to present your case properly.
Start by gathering a solid run of payslips, not just the latest one. If you have six months showing consistent overtime, that is usually more persuasive than one standout month. Make sure your bank statements match the income shown. If there is a clear annual pattern on your P60, that helps show overtime is not a fluke.
It is also worth being realistic. If your overtime has dropped recently, say so early. If your role has changed, explain it. Trying to hide weak points usually backfires once underwriting starts.
Most importantly, do not assume your first lender is your best lender. This is where proper advice can save you money, time and a lot of pointless stress. A broker who understands which lenders are sensible on overtime income can steer you away from dead ends and towards lenders whose criteria actually fit your case.
Overtime, bonuses and commission are not the same thing
Borrowers often bundle all extra pay together, but lenders do not. Overtime, bonuses and commission can all be treated differently.
Overtime is usually linked to extra hours worked. Bonuses may be discretionary. Commission can be highly variable and linked to sales performance. Because the risk profile is different, the way lenders assess each type of income is different too.
That matters if your payslips include a mix. A lender may accept 100% of one element, 50% of another, and none of a third unless there is a strong history. If you want a clear answer, the detail matters.
The smart move if you need overtime income to qualify
If the property only works because your overtime is included, you need to be strategic from the start. This is not the moment for guesswork or hopeful online calculators.
You want a lender that recognises the reality of your income, not one that strips it back and leaves you short. You also want the application packaged properly, with the right evidence upfront, so the underwriter can say yes without a chain of avoidable questions.
That is where an experienced broker earns their keep. Mortgage Genius helps borrowers cut through lender nonsense, find the right fit across a broad panel, and present the case properly first time. When overtime income is the difference between a rejected application and a workable mortgage, getting the setup right matters.
If your overtime is regular and provable, do not write yourself off before a lender has even looked at the facts. Plenty of borrowers are stronger than they think – they just need someone to show the income properly and put them in front of the right lender.
