Buy a holiday home, enjoy it yourself and let paying guests help fund it for the rest of the year. Foundation’s new allowance of up to 60 days’ personal use makes that ambition easier to explore for eligible borrowers. But with UK holiday-let occupancy softening, the important calculation is how much the property earns after you have reserved the weeks you want.
For many buyers, the attraction is straightforward: a coastal retreat or country cottage that provides family holidays and contributes towards its own running costs. Rental income could make a property more affordable to hold without requiring the owner to treat every available week as a commercial opportunity.
The difficulty comes when a mortgage is selected on one set of assumptions and the property is used on another. A forecast based on letting through the summer can look very different once the owner blocks August for family stays.
That is where the latest lending change becomes useful. It opens a conversation about financing a property with two purposes, while making it essential to work out what each purpose costs.
What Has Changed?
On 14 October, Foundation announced that its holiday-let criteria now permit owners to stay in their properties for up to 60 days a year. It also reduced selected holiday-let fixed rates. The personal-use allowance is specific to the lender and subject to its full requirements.
Separately, KeyData’s UK Autumn Index, reported by Property Reporter on the same day, showed nightly rates rising in Q3 while occupancy weakened. Average daily rates increased year on year by 4% in July, 2% in August and 4% in September. Occupancy was flat in July, then fell by a reported 4% in August and 5% in September.
The Appeal: A Second Home With an Income
A buyer may happily accept a lower financial return in exchange for spending time in a property they love. Another may need the letting income to cover most of the ownership costs. Those are different objectives and can lead to different borrowing decisions.
Start by deciding what the property needs to deliver. Is the aim to offset some expenses, cover mortgage interest, meet all annual cash commitments or produce a surplus? Saying that a property will “pay for itself” is not sufficiently precise.
A home generating enough rent to meet interest can still require substantial contributions towards maintenance, utilities, insurance and management. A repayment mortgage also requires capital payments. The purchase deposit and transaction costs remain capital committed by the owner.
Personal enjoyment has value, but it should sit alongside a clear cash budget. That allows the buyer to decide how much they are comfortable contributing each year if the rental income falls short.
Sixty Days of Permission Does Not Mean Sixty Cost-Free Days
The allowance addresses a lending restriction. It does not replace income lost when the owner chooses to stay.
Two owners could each use a property for 60 days and produce very different results. One might reserve quieter weekdays outside the main season. The other might take school holidays, summer weekends and Christmas.
The second owner could be withdrawing more valuable dates from the letting calendar. The financial effect depends on realistic demand and achieved prices for those dates, rather than the annual day count alone.
Before requesting a rental projection, give the letting agent or manager the dates you intend to keep. Ask for a forecast based on the calendar guests can actually book. That is more useful than a headline income estimate assuming unrestricted availability.
What Could Keeping Four Summer Weeks Cost?
Consider a hypothetical holiday home whose owner reserves 28 summer nights. Assume that, if offered to guests, those dates would achieve an average £250 a night and 75% occupancy.
That represents 21 paid nights and £5,250 of potential gross accommodation revenue. If guest-related costs equal 20% of that revenue, the contribution forgone after those costs is £4,200.
This is not a prediction that the dates would sell. It illustrates how to value an assumption. The owner may consider four weeks of family holidays well worth that amount, but the mortgage and fixed bills still need funding.
If the annual rental forecast already excludes those 28 nights, do not deduct the £5,250 again. The purpose is to build one consistent budget, with personal occupation included from the start.
The Better Question for a Letting Agent
“What could this property realistically earn after we reserve our own dates, and what would be left after your charges and the other operating costs?” That answer is more useful for a purchase decision than the highest weekly rent shown on a listing.
A Higher Nightly Rate Can Still Leave Less for the Mortgage
The latest market figures make that distinction particularly relevant. Higher prices broadly supported revenue per available rental in KeyData’s data, keeping it within 2% of the previous year in August and September despite softer occupancy. That does not establish an individual property’s profit.
For an owner, the starting calculation is achieved price multiplied by paid nights. A property charging more can collect less over the year if bookings fall far enough.
The following hypothetical comparison holds operating-cost assumptions and mortgage interest constant. It is an illustration of annual cash flow, separate from the Q3 research.
| Measure | More Bookings | Higher Rate, Fewer Bookings |
|---|---|---|
| Average achieved nightly rate | £185 | £200 |
| Paid nights | 200 | 180 |
| Gross accommodation revenue | £37,000 | £36,000 |
| Revenue-related costs, assumed at 20% | £7,400 | £7,200 |
| Fixed operating costs | £9,000 | £9,000 |
| Cash available before mortgage interest and tax | £20,600 | £19,800 |
| Annual mortgage interest | £18,000 | £18,000 |
| Cash remaining before tax and excluded costs | £2,600 | £1,800 |
The nightly rate rises by just over 8%, but gross revenue falls by £1,000. The remaining cash buffer falls by £800. A relatively modest repair or other unbudgeted cost could absorb what is left.
At the second scenario’s £200 achieved rate, the assumed 20% revenue-related costs leave £160 per paid night towards fixed costs and interest. Meeting the illustrated £27,000 of annual fixed costs and interest would require at least 169 paid nights, before the excluded items.
That threshold is only as reliable as the assumptions. It is not a lender’s affordability test, an after-tax break-even point or a promise that a particular property can secure those bookings.
Could Your Holiday Home Support the Borrowing You Need?
Tell Willow how often you want to use the property and what rental evidence is available. We can assess suitable holiday-let finance and compare the borrowing with realistic income and ownership costs.
Discuss Your Holiday-Let Mortgage →Will the Lender Accept the Same Income You Expect?
A rental forecast and a mortgage assessment answer different questions. The forecast estimates trading performance; the lender applies its own evidence requirements and borrowing criteria.
Depending on the lender and product, the assessment may require seasonal rental estimates, trading records or other supporting information. Confirm how personal occupation is treated and what income can be accepted before relying on a particular loan amount.
A property can pass an underwriting test while delivering less spare cash than its owner wants. Conversely, an owner’s confidence in future bookings does not require a lender to accept that forecast.
For an established holiday let, reconcile actual receipts, paid nights and expenditure. For a new purchase, examine the assumptions behind the projection and the evidence for comparable properties. Advertised nightly prices alone are a weak basis for a substantial commitment.
The Quiet Months Need Their Own Funding Plan
An annual surplus can conceal several months in which rent does not cover the bills. A holiday property may earn much of its income during a relatively short season, while interest, insurance and other commitments continue throughout the year.
Prepare a monthly forecast using the timing of receipts and expenditure. Include when the manager remits money, when annual bills fall due and when repairs or maintenance are likely to be needed.
Then test fewer bookings and a higher mortgage cost at refinance. Establish the cash reserve needed to carry the property through those conditions, including any support from the owner’s other income.
For a buyer relying on rent to fund ownership, this can influence the sensible loan amount. A larger deposit may reduce the annual borrowing cost but commits more capital; a larger mortgage preserves cash initially but increases the income the property needs to generate.
Choose Finance That Matches the Intended Use
An ordinary buy-to-let mortgage should not be assumed to permit holiday bookings or personal occupation. Equally, a second-home arrangement should not be assumed to permit commercial short-term letting.
Explain the full plan before applying: who will own the property, who will use it, the intended personal dates and how it will be marketed to guests. Foundation’s change creates an option to assess, rather than a blanket entitlement across the market.
Existing owners should check their current mortgage before changing use. A new announcement does not automatically alter an existing contract. If refinancing is needed, include product fees, early repayment charges and any fees added to the balance in the comparison.
The cheapest advertised rate may not be the most suitable arrangement if its terms do not accommodate the owner’s actual plans.
Check the Property as Well as the Mortgage
Lending permission is one part of the purchase. Planning, lease or title restrictions, insurance and local operating requirements also need checking with the appropriate professionals.
Requirements differ by location and UK nation. A property described as a holiday investment should still be investigated for the precise use and ownership arrangement proposed.
Tax needs its own current assessment. The former Furnished Holiday Let tax regime was abolished from April 2025, so an older investment appraisal may contain assumptions that no longer apply. Ask your accountant to assess the intended arrangement, including personal use and financing.
How Willow Can Help You Test the Plan
Willow can review suitable borrowing for a holiday-let purchase or refinance, beginning with the balance you want between family use and rental income.
We consider the property, available deposit, personal-use requirements and rental evidence, then compare relevant lender terms and financing costs. Working with your accountant, solicitor and letting manager can help keep the purchase assumptions consistent.
The useful outcome is knowing what the property is likely to ask of your own finances. Guests may cover a substantial part of ownership, or you may choose to contribute more in exchange for keeping the dates you value.
A flexible mortgage makes that choice possible for more eligible borrowers. A realistic budget helps you decide whether it is a choice you want to make.
Frequently Asked Questions
Buying a holiday home for personal use and rental income.
Can I use a holiday let myself for 60 days a year?
Foundation announced an allowance of up to 60 days’ personal occupation on 14 October 2026. Eligibility and the full product terms need checking. Other lenders and existing mortgage contracts may have different restrictions.
Can rental guests cover my holiday-home mortgage?
They may, but this depends on achieved rates, paid nights, operating costs and borrowing costs. Forecast income after removing your personal-use dates, and distinguish covering interest from covering every ownership cost.
Which personal-use dates have the biggest financial impact?
Dates with strong paying-guest demand may carry a greater revenue opportunity cost. Ask the letting manager to assess your intended calendar rather than assuming every owner-use day has the same financial effect.
Can I use a standard buy-to-let mortgage for a holiday home?
Do not assume a standard buy-to-let mortgage permits holiday letting or personal stays. Disclose both uses and check the lender’s terms. A change of use may require different finance and other permissions.
What does Willow need for a holiday-let finance review?
Useful information includes the property details, purchase price or value, deposit or existing debt, intended personal-use dates, rental estimates or trading records, operating costs and any current mortgage terms.

