Joint mortgage with a partner

Two applicants on one mortgage means lenders assess both incomes, both credit profiles, and both sets of monthly commitments. The borrowing figure is usually higher than either of you could do alone, but not always double. Lenders cap total borrowing at a multiple of joint income, typically 4 to 4.5 times, with stretch options up to 5 or 6 times for stronger profiles.

Worked example on joint income

Two applicants on £42,000 and £38,000 (joint £80,000), no dependants, £200 of monthly commitments. A 4.5x lender produces £360,000 of borrowing. A 5x specialist lender on a strong credit profile pushes to £400,000. Add a 10% deposit of £40,000 and you are buying at £400,000 to £440,000. The same two applicants applying solo would each see roughly £180,000 of borrowing. Joint application unlocks the upgrade.

Joint tenants versus tenants in common

Two ways to own property jointly. Joint tenants means you each own the whole property together; if one of you dies, the property passes automatically to the other, regardless of any will. Tenants in common means each of you owns a defined share, often 50/50 but it can be any split, and each share can be left to anyone in your will. Tenants in common is the right structure when one of you contributes a much larger deposit than the other, or when there are children from a previous relationship to consider.

Whose income, whose credit profile

Both. The lender takes the lower credit score as the binding one on most cases. If one applicant has had recent credit events, the lender pool narrows even if the other applicant is clean. We assess this at AIP (Agreement in Principle) stage so you know what you are working with before you go to full application.

What if you split up

Both names stay on the mortgage and the property until the mortgage is repaid or refinanced. One person cannot simply remove themselves. The options are to sell, to remortgage in one name (which requires the remaining person to qualify alone), or to add a new applicant via a joint borrower arrangement. We have placed both ends of this scenario. The buyout mechanic involves a transfer of equity (the legal step where one party transfers ownership) plus a remortgage onto a sole-name product. The single-income affordability check is the gating issue.

Unmarried buyers

Cohabiting couples have far fewer automatic legal protections than married couples or those in a civil partnership. A Declaration of Trust drawn up by a solicitor at the point of purchase records who put what in and who gets what out. If your contributions are different, ask your conveyancer about one. Setting one up alongside your conveyancing is a modest additional cost relative to the protection it gives you, most conveyancers can arrange it as part of the purchase, and it sits on the file for the life of the property.

Mixed deposit contributions

If one of you puts in £30,000 and the other puts in £10,000, but ongoing payments are 50/50, your beneficial interest is not 50/50. Tenants in common with a Declaration of Trust spelling out the £30,000/£10,000 split protects the larger contributor. Without a Declaration of Trust, disputes are typically resolved on the assumption of equal (50/50) ownership, regardless of who paid what into the property. We flag this conversation early.

Common pitfalls we see

Applying with one income because the other applicant has a recent default, when a small wait or a settled default would have opened the joint pool. Going joint tenants by default at the conveyancer office without realising the deposit imbalance. Forgetting to update the Will after buying jointly. None of these are catastrophic but each costs time or money to fix later.