When it comes to getting a mortgage, income like, overtime, bonus, commission, shift and other variable pay is considered by most mortgage lenders.
The catch, and there is always a catch, with mortgages, is that Irish lenders do not all assess variable income in the same way. One lender may be quite generous, while another may treat the very same payslips with far more caution.
Many workers across Ireland earn regular overtime, shift allowance, bonus income or commission as a normal part of the job. For Nurses, An Garda Síochána members, other healthcare staff, sales professionals and shift workers in particular, variable income can make a meaningful difference to how much they can borrow.
This article explains how lenders assess that income, what documents they look for, and how to put yourself in the strongest position before you apply.
Does Variable Income Count Towards a Mortgage?
Yes, variable income can count towards the mortgage amount in Ireland, but it is not treated the same by every bank.
The Central Bank rules set the overall borrowing limits at up to 4 times gross income for first-time buyers and 3.5 times for secondand subsequent buyers, but lenders decide themselves what counts as “allowable income” within their own underwriting rules. That is where the real difference appears.
If your income includes overtime, bonus, commission or allowances, the amount a lender accepts can have a big effect on your approval level. MortgageLine’s guide to how much you can borrow in Ireland is a useful starting point before getting into lender-specific detail.
How Lenders Treat Overtime Income in Ireland
When it comes to overtime income and mortgages, consistency is key. Lenders generally look more favourably on overtime that is regular, established and visible over time.
Overtime that is irregular can still help but less so.Lenders acceptance of variable income can vary from 0% to as much as 100%, depending on the lender and the strength of the track record.
This is why, does overtime count towards mortgage, is not really a yes or no question. It is a lender question.
For some applicants, particularly public sector workers whose overtime is frequent and predictable, certain lenders may view that income as a reliable part of overall earnings. For others, especially where the overtime is patchy or newly increased, the lender may scale it back sharply.
How Lenders Treat Bonus Income in Ireland
Mortgage bonus income is usually split into two categories:
- Contractual
- Discretionary
If a bonus is guaranteed under your employment terms, lenders tend to view it more favourably.
If it is performance-based and not guaranteed, lenders are more cautious and may only accept part of it or none at all, depending on the case.
For bonus income mortgage Ireland cases, lenders typically want to see a proven history rather than one strong year. That is why a two- or three-year track record is important.
Haven Mortgages (AIB) current credit criteria, for example, says
“…where income is performance-related or made up of non-basic income, it requires three years of Employment Detail Summaries to confirm the track record of earnings…”.
Some of the other lenders will look at the last 2 or 3 years, whichever is the most favourable.
How Commission Income Is Assessed When Applying for a Mortgage
Commission income is assessed on similar principles to overtime and bonus income. Lenders want to see that it is consistent, sustainable and backed up by documentary evidence. In many cases, they will cap commission income conservatively rather than taking it at face value. The longer and steadier the pattern of earnings, the better the outcome is likely to be.
This can be especially relevant for applicants exploring first-time buyer mortgage options in Ireland where commission forms a meaningful part of affordability.
How Lenders Calculate Variable Income
Lenders generally assess variable income by looking at a period of past earnings, averaging it, applying a lender-specific percentage, and then checking whether you still comfortably meet repayment stress tests.
Haven’s broker documentation also shows that repayment capacity must be clearly evidenced and supported as part of the application.
A practical example makes the point.
Imagine a first-time buyer in Ireland earning €50,000 basic salary plus €30,000 overtime.
Mortgage Lender 1 Example
A flexible lender that accepts all of the variable income could assess the application at 4 x €80,000, giving a possible mortgage of €320,000.
Mortgage Lender 2 Example
A more conservative lender that only accepts €10,000 of the overtime could assess it at 4 x €60,000, giving a possible mortgage of €240,000.
Lender 1 (Flexible) | Lender 2 (Conservative) | |
Basic salary | €50,000 | €50,000 |
Variable income accepted | €30,000 (all overtime) | €10,000 (partial overtime) |
Total income assessed | €80,000 | €60,000 |
Multiplier |
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Difference | – |
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Same person, same job, very different answer. That gap is exactly why how much variable income counts for mortgage in Ireland depends so heavily on lender choice. The worked example aligns with the kind of lender variation MortgageLine Brokers see every day.
Before applying, it helps to estimate your monthly mortgage repayments here so the numbers make sense in the real world as well as on paper.
The Salary Certificate: What It Shows
The salary certificate is one of the key documents in a mortgage application. It is completed by your employer and separates your basic salary from variable income such as overtime, bonus, commission and shift allowance.
Lenders use it to decide how much weighting to apply to each part of your pay. Mortgage Lender checklists specifically ask for a Salary Certificate that is stamped and signed by your employer confirming permanency, basic salary and variable pay.
Here is a copy of the MortgageLine Salary Certificate which all lenders accept.
Employment Detail Summary Requirements
Lenders may require up to three years of your EDS (Employment Detail Summary, previously a P60) where income includes performance related or non-basic pay. Others may be less strict and work from a shorter track record. But all lenders still want evidence that variable income is not a once-off. Some mortgage lender checklists ask for three years of EDS to consider variable income, while other lenders like, Núa Money, may only need to evidence the last 12 months.
That is why gathering these documents early is such a sensible move. It saves time and avoids the classic mortgage headache of scrambling through Revenue records at the moment you had hoped to be house hunting.
How Much More Could You Borrow with Variable Income?
This is the part most applicants care about, and fair enough too.
It depends on your situation if the lender sees the variable income as reliable.
Using the example above, a nurse on €50,000 basic salary and €30,000 overtime could potentially see borrowing range from roughly €240,000 to €320,000, depending on how the lender treats the overtime.
That difference could determine whether you can buy in your preferred area, whether you need more deposit, or whether the property search becomes a long, dramatic saga involving Daft.ie and MyHome alerts and disappointment.
Why Lender Choice Makes a Big Difference
No two lenders treat variable income the same way. One may ignore overtime completely. Another may accept a high percentage of it. Another may accept it, but only after seeing a strong multi-year track record and additional proof of repayment capacity.
Any Mortgage Broker will show you approvals vary widely because lenders use different underwriting criteria and will take more or less of your variable pay into account.
That is why comparing lenders matters so much, especially if your application involves variable income. Mortgage rules in Ireland are not straightforward. MortgageLine’s article on using a broker versus going direct to a bank is worth a read if you are weighing up your options.
Tips to Strengthen a Variable Income Application
There is plenty you can do to improve your application:
- Build a clear and consistent track record of overtime, bonus or commission
- Gather your Revenue Employment Detail Summaries early
- Ask your employer for a detailed Salary Certificate
- Keep your bank statements clean and avoid unnecessary new loans or credit cards.
- Put once-off bonus income, overtime and commission into savings where possible to demonstrate repayment ability
These steps help show lenders that your extra income is not just real, but manageable and sustainable too. That matters when you have variable income and need a mortgage. Mortgage lenders in Ireland stress test how dependable your earnings really are.
How a Broker Helps with Variable Income Applications
MortgageLine understands the Irish market and can make a real difference with variable income cases. We know which lenders are more open to overtime, bonus and commission income, what documents they want to see, and how to package the application in the strongest possible way.
It is not just about filling in forms. It is about matching you to the mortgage lender most likely to give your earnings the weight they deserve.
Ready to Maximise You’re Borrowing with MortgageLine?
Variable income can absolutely be an advantage when applying for a mortgage in Ireland. Overtime, bonus and commission can all increase borrowing power, but only if they are presented properly and placed with the right lender. That is why broker advice matters even more when your income is not just basic salary.
MortgageLine advisors understand how lenders assess variable income in Ireland and can help you make the most of every euro you earn.
Contact us today for a free, no-obligation chat.
Frequently Asked Questions (FAQs)
Does shift allowance count as income for a mortgage?
Yes. Shift allowance is usually treated as non-basic income, so lenders may count some or all of it. As long as it is regular and evidenced.
Can I use one year of bonus income to apply?
You can apply, but one year of bonus income is often weaker than a two or three-year track record. Lenders generally prefer to see that bonus income is recurring rather than once off.
Does declining overtime affect my mortgage offer?
Yes, it can. If your recent overtime is lower than in previous years, the lender may reduce how much of it they count. That can affect affordability and, in some cases, the loan amount offered.
What if my overtime varies significantly each year?
That usually leads to a more conservative assessment. Lenders are more comfortable with stable patterns than with sharp swings in earnings, so inconsistent overtime may be averaged down or only partly accepted.
Can I include income from a second job?
Sometimes, yes. Núa Money, for example, can take a second income into account, however, additional evidence is needed. Other lenders will consider it subject to conditions and proof.
