Yes, seafarers borrow for UK mortgages across multiple lenders in the market. There is no single figure and no fixed multiple. What you can borrow comes down to the income a lender will assess and an affordability test, and for seafarers the assessed income is where the real difference lies. Get that read correctly and your borrowing reflects what you genuinely earn. This sits within our wider guide to getting a mortgage as a seafarer.
Situations we see regularly
- Income paid in a foreign currency.
- A nil or low tax bill from the Seafarers Earnings Deduction.
- Rotational contracts with long spells at sea.
- A deposit saved while working abroad.
What decides how much a seafarer can borrow?
Two things: the income a lender is willing to assess, and how that income fares against the lender's affordability test. The test weighs your committed outgoings, dependants and any existing credit against the assessed income. No lender fixes a figure in advance, but the assessed income is the lever that moves your number most, and for seafarers it is also the part most often read wrongly.
How does foreign currency change the figure?
A lender applies a reduction to your converted foreign currency pay, and the size of that reduction varies between lenders, so the lender you choose changes your borrowing more than the rate does. Our foreign currency mortgage calculator shows an indicative range. How lenders convert and assess foreign currency income is covered in detail on our seafarer foreign currency income page.
Want to know the figure a lender would actually assess? Tell us how you are paid.
Start the 60-Second CheckHow does the Seafarers Earnings Deduction affect borrowing?
The Seafarers Earnings Deduction (SED) lowers your UK tax, not your earnings. An automated check can read the low tax figure as a low income and shrink what it will lend. A lender that understands seafarers works from your gross contractual pay instead, so the deduction does not have to cost you borrowing. Our Seafarers Earnings Deduction page covers the evidence a lender will want.
What a seafarer can borrow is set by the income a lender will assess, not by the headline figure on a payslip.
What else affects the amount?
Your deposit and the resulting loan to value, the property itself, your other commitments and your residency all play a part. UK-resident seafarers can often reach standard borrowing levels, subject to criteria, while non-resident cases tend to face a shorter list of lenders and a larger deposit. You must be on UK soil to receive advice, so we confirm your circumstances properly before pointing you anywhere.
How do I find my number?
The honest answer is that it depends on the lender, and the right lender for your income is the one whose assessment treats your pay fairly. Mortgage One has access to plans from the whole of market and gives professional advice on where your case fits, so the figure you are quoted reflects how you are genuinely paid.
Stop guessing at the number. Let an adviser work it out from your real income.
Check Your OptionsHow a lender turns your income into a borrowing figure
Two steps decide the number. First the lender settles on an assessed income, which for a seafarer can be your full gross pay, or your converted foreign currency pay after a discount, depending on how you are paid and which lender reads the case. Then it applies a multiple and an affordability test to that figure. Many lenders work to around 4.5 times the assessed income, and some stretch to 5 times for higher earners or certain professionals, always subject to stress testing against your outgoings and any existing credit. Because the multiple is fairly consistent across the market, the assessed income is where most of the movement in your borrowing comes from, and for seafarers that is the figure most often read wrongly.
Deposit and loan to value sit alongside the income. A UK-resident seafarer paid in sterling can often reach standard high-street loan to value levels, so the deposit looks like any other residential purchase. Where part of your pay arrives in a foreign currency or you are not UK resident, lenders commonly ask for more, frequently 15% to 25% or more, and some of those cases are best placed with expat or international lenders. The evidence behind all of it is the same short list: an employment contract showing your rotation, three to six months of payslips or remittance advices, matching bank statements, a sea-service letter, and proof of your UK address and deposit.
Three worked examples for seafarer borrowing
The clearest way to see how the assessed income drives the figure is to walk three seafarers through it. First, a merchant navy crew member earning £45,000, paid in sterling and UK resident. The income is taken close to in full, so at around 4.5 times it supports borrowing of roughly £202,500, with a deposit potentially from 5% because the case sits near a standard residential profile.
Second, a seafarer earning £70,000 with part of the pay in a foreign currency. After a typical discount on the currency portion, a lender might assess the income at around £63,000, which at around 4.5 times supports borrowing of roughly £283,000. Because foreign currency is in the mix, the deposit here is more likely to fall in the 15% to 25% range, and the lender choice matters because the size of the discount varies from one to the next.
Third, a higher earner on £90,000 whose profile suits a lender willing to work at 5 times income. That can support borrowing of about £450,000, subject to the affordability test holding up against outgoings and commitments. The same earner taken at a lower multiple would see a smaller figure, which is why matching a higher earner to the right lender is worth doing carefully rather than accepting the first offer.
Figures are illustrative. Your actual borrowing depends on your full circumstances, the lender and an affordability assessment.
What can move your figure up or down
Within those examples, several things nudge the number either way. A larger deposit lowers the loan to value and can open up lenders whose best terms sit at lower ratios, which sometimes helps a borderline affordability case clear. Existing commitments, car finance, credit cards and dependants all reduce the borrowing a given income will support, because the affordability test weighs them before it settles on a figure. A higher earner with a clean, simple outgoings picture is the profile most likely to reach the 5 times multiple, while the same income carrying heavy commitments may sit closer to 4.5 times or below.
How you are paid pulls in the same direction as the deposit. Sterling pay to a UK resident keeps the assessed income close to the headline figure, so the borrowing reflects the full salary. A foreign currency strand introduces the discount, and the size of that discount is set by the lender rather than the market, which is why two lenders can quote the same seafarer different ceilings. None of this is guesswork once the case is in front of the right desk. A whole-of-market broker can line your income, deposit and commitments up against the lenders most likely to give you the highest sound figure, rather than the first figure offered.
If you take one thing from these examples, let it be that the figure is built, not fixed. It starts from the income a lender will assess, which for a seafarer is the part most worth getting right, and is then shaped by your deposit, your commitments and the multiple the lender will use. Change the lender and you can change the starting income, and with it the whole figure, which is why the number is best worked out against the market rather than guessed at in advance.
Frequently asked questions
Is there a fixed income multiple for seafarers?
No. There is no single multiple that applies to everyone. A lender works from your assessed income and an affordability test that weighs your outgoings and commitments, so the figure is built around your circumstances rather than a flat rule.
Does foreign currency pay reduce how much I can borrow?
It can. A lender converts non-sterling pay to sterling and applies a reduction to allow for the rate moving, then works from that figure. The size of the reduction varies between lenders, so the lender you choose affects the amount more than the rate does.
Does the Seafarers Earnings Deduction lower what I can borrow?
Not with the right lender. The deduction lowers your tax, not your earnings, and a lender that understands seafarers works from your gross contractual pay rather than the low tax figure on your return.
How do I start?
Use the 60-second check and a Mortgage One adviser will review your answers and tell you where you stand. You can also call us on 01202 155992. You must be on UK soil to receive advice.
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