Genuine 100% mortgages exist again in the UK through two routes: rent track record products that convert evidenced on time rent into borrowing with no deposit, and a long fix 100% loan requiring £24,000 of household income on properties above £75,000, fixed for 10 or 15 years from 5.99%. Family backed structures such as joint borrower sole proprietor sit alongside.
TL;DR · LAST REVIEWED 25 JULY 2026
- Track record products lend up to 100% against sustained on time rent at or above the prospective mortgage payment
- A long fix 100% loan runs from 5.99% fixed for 10 or 15 years, at £24,000 minimum household income on properties above £75,000
- At 100% loan to value any price fall creates negative equity immediately, which blocks remortgaging rather than forcing sale
- Joint borrower sole proprietor adds a family member's income without adding them to the deeds
- Every 5% of deposit saved moves borrowing into cheaper rate bands and further from negative equity
KEY FACTS
- Track record style lending re opened the UK 100% market, converting proven rent payment into affordability evidence
- Long fix 100% criteria: £24,000 minimum household income, property value above £75,000, 10 or 15 year fixed rate from 5.99% stepping down as the loan repays
- 100% loan to value means zero equity at completion; negative equity follows any price fall
- JBSP: helper shares full payment liability but owns no share of the property and stays off the deeds
- Guarantor and family deposit products secure lending against a helper's savings or property equity, released after clean payment periods
- 100% rates sit meaningfully above low deposit lending, reflecting the absent buffer
The true zero deposit routes
Track record products lend up to 100% to renters who evidence sustained on time rent at or above the prospective mortgage payment, on the logic that the payment behaviour is already proven. The long fix route instead trades a decade or more of rate certainty for the missing deposit.
The long fix product sets eligibility from £24,000 of household income on properties above £75,000, with the rate fixed for 10 or 15 years from 5.99% and stepping down automatically as the balance falls. Both routes share the structural feature of all 100% lending: no equity buffer on day one.
Negative equity, stated plainly
A borrower at 100% loan to value owns none of the property at completion, so any fall in value puts the mortgage above the home's worth. Negative equity does not force a sale while payments continue, but it blocks remortgaging to better rates until values recover or the balance amortises below the price.
Long fixes blunt the remortgage problem by removing the need to refinance soon; they do so at rates above the low deposit market, and early repayment charges on decade long fixes deserve careful reading before signing.
The family backed alternatives
Joint borrower sole proprietor mortgages add a family member's income to affordability without adding them to the deeds: the helper is fully liable for payments but owns no share, which keeps the purchase a first home for stamp duty purposes rather than the helper's additional property.
Guarantor style and family deposit products instead secure the lending against a family member's savings or property equity, releasing the security after a set period of clean payments.
Each structure places real, enforceable obligations on the helper: payment liability on JBSP, locked savings or a legal charge on deposit schemes. Independent advice for each side is standard practice.
Whether to wait and save instead
Every 5% of deposit moves a borrower into cheaper mortgage rate bands and further from the negative equity line, which is the honest case for waiting and saving first wherever saving is genuinely realistic alongside the rent being paid.
The case for 100% routes is the renter whose rent already exceeds the prospective mortgage payment and whose deposit saving is arithmetically blocked by that rent. For that borrower the products exist precisely to convert proven payments into ownership, at the price of higher rates and zero initial buffer.
RELATED GUIDES
DISCLAIMER
This article is editorial information, not financial advice. Kael Tripton Ltd is not authorised or regulated by the Financial Conduct Authority. Figures were correct at the last review date shown above; verify current rates and rules with the primary sources listed below before acting.
Frequently asked questions
Can I really get a mortgage with no deposit?
Yes, through rent track record products lending up to 100% against evidenced on time rent, and through a long fix 100% loan at £24,000 household income on properties above £75,000. Criteria run tighter than standard lending.
What is a track record mortgage?
A 100% product treating sustained clean rental history at or above the prospective mortgage payment as the affordability evidence a deposit would otherwise provide.
What is a joint borrower sole proprietor mortgage?
A structure adding a family member's income to the mortgage without adding them to the deeds: full payment liability, no ownership share, and no additional property stamp duty position for the helper.
How likely is negative equity at 100%?
Any price fall creates it immediately at 100% loan to value. It matters mainly at remortgage time, which is why current 100% products pair with long fixed terms.
Are 100% mortgage rates higher?
Yes, meaningfully above low deposit lending. Each 5% of deposit saved moves borrowing into cheaper bands, which is the standing argument for saving where rent levels allow.
What does a guarantor actually risk?
Depending on structure: liability for payments, locked savings, or a legal charge over their own home. The obligations are enforceable, which is why independent advice for the helper is standard.
SOURCES
- GOV.UK: Stamp Duty Land Tax – accessed 25 July 2026
- FCA: Mortgages – accessed 25 July 2026
