Buy-to-Let for First-Time Landlords

🤔First, is being a landlord right for you?

Buy-to-let can be a genuinely good way to build long-term wealth and income. But the single biggest mistake first-time landlords make is treating it like a savings account. It isn't. Being a landlord is running a small business, with customers (your tenants), running costs, tax returns, legal responsibilities and the odd 7am call about a broken boiler.

You make money two ways: rental income (the monthly rent, minus your costs) and capital growth (the property hopefully rising in value over the years). Neither is guaranteed. Rents can dip, properties sit empty between tenants, interest rates move, and values can fall as well as rise.

It tends to suit you if you can tie money up for the long term (think 10 years plus, not 2), you've got a cash buffer for surprises, and you're comfortable with some admin and risk. If you'd lose sleep over a two-month void or a £2,000 repair bill, it may not be for you, and that's fine to know now rather than later.

💷How much money you actually need

The deposit is only part of it. Here's the full cash you need to find before you get the keys to your first buy-to-let:

1. The deposit, usually 25%. Most buy-to-let lenders want at least a 25% deposit (so 75% loan-to-value). A handful go to 20%, but with higher rates. The very best rates usually need 40%. On a £200,000 property, that's a £50,000 deposit at 25%.

2. The stamp duty surcharge, this one stings. Because a buy-to-let is an additional property, in England and Northern Ireland you pay a 5% Stamp Duty surcharge on top of standard rates (raised from 3% at the October 2024 Budget), on every band from £40,000 upwards. On a £200,000 rental that's around £11,500 in stamp duty; on £250,000 it's £15,000. Scotland charges an 8% Additional Dwelling Supplement; Wales uses its own higher-rate bands. Check the real figure on our stamp duty calculator with "Additional Property" selected.

3. The other buying costs. Legal/conveyancing fees (roughly £1,000, £2,000), a survey (£400, £1,500), mortgage arrangement fees (often 1 to 2% of the loan, sometimes added to it), and broker fees where they apply.

4. The bit new landlords forget, a cash float. You need money set aside after completion for furnishing (if letting furnished), safety certificates, any works to hit the required EPC standard, and a rainy-day fund for voids and repairs. Budget a few thousand pounds minimum.

🏦How buy-to-let mortgages work

A buy-to-let mortgage is a different product to the one you'd use for your own home. It's assessed mainly against the property's rental income, not your salary. The lender's core question is: "Will the rent comfortably cover this mortgage, even if rates rise?"

The rent stress test (ICR). Lenders apply an Interest Coverage Ratio, they want the monthly rent to cover roughly 125% to 145% of the mortgage interest, worked out at a stressed rate of around 5.5% or higher (not your actual pay rate). Basic-rate taxpayers usually face the 125% test; higher-rate taxpayers the tougher 145%. In plain terms: the rent has to clear the payment with a healthy cushion on top, or the loan shrinks or is declined.

Interest-only is normal here. Most buy-to-let mortgages are interest-only, you pay just the interest each month, the balance never reduces, and you repay the loan by selling (or refinancing) at the end. It keeps monthly cashflow strong but means you're relying on the property's value holding up.

First-time landlord criteria. Some lenders are stricter if you don't already own a rental, a few even want you to already own your own home. Many also ask for a minimum personal income (often around £25,000) on top of the rent. First-timers absolutely can and do get approved; it just narrows the lender list, which is exactly where a whole-of-market broker earns their keep.

📈What you'll actually earn, yields, not headlines

Gross yield is the headline number: annual rent ÷ purchase price. A £200,000 property renting at £1,000/month = £12,000/year = a 6% gross yield. Across the UK the average is roughly 3.6% gross; northern cities like Liverpool and Manchester often hit 7 to 9%; prime London is nearer 3 to 5%. A gross yield of 5 to 8% is generally considered healthy.

Net yield is the number that matters. It's what's left after real costs: mortgage interest, letting agent fees, insurance, maintenance, void periods and compliance. Net yield is typically 1.5 to 2.5 percentage points lower than gross, so that 6% gross property might really return 3.5 to 4.5% net. A deal that looks great on gross can be thin once the costs are in.

💼The tax on your rental income

You pay income tax on your rental profit (rent minus allowable costs) at your normal rate, 20%, 40% or 45%, on top of your other income. There's a £1,000 property allowance: earn less than that from property and you don't even need to declare it. Above it, you register for Self Assessment (deadline: 5 October after the tax year you first receive rent).

Section 24, the rule that catches new landlords out. Since 2020, individual landlords can no longer deduct mortgage interest from rental income before tax. Instead you get a flat 20% tax credit on the interest. For basic-rate taxpayers it's broadly neutral. For higher-rate (40%) taxpayers it's a real hit, you can end up taxed on "profit" that your mortgage has largely eaten. Allowable costs you can still deduct include letting agent fees, insurance, repairs (not improvements), and safety certificates.

Personal name vs limited company (SPV). A limited company isn't affected by Section 24, it deducts mortgage interest in full and pays corporation tax (19% up to £50,000 of profit, up to 25% above). That's why around 80% of new buy-to-lets are now bought through companies. But companies mean more admin, accountancy fees and slightly higher mortgage rates, and moving an existing personal property into a company triggers stamp duty and capital gains tax. As a rule of thumb: basic-rate taxpayers often keep it simple in their own name; higher-rate taxpayers building a portfolio often lean to a company, but this is a decision to make with a property tax accountant before you buy, not after.

Making Tax Digital is coming. From April 2026, landlords with property (and self-employment) income over £50,000 must keep digital records and file quarterly updates under Making Tax Digital for Income Tax, not just one annual return. Lower thresholds follow in later years.

📋Your legal responsibilities (the compliance checklist)

This is the part that turns a property into a legal let. Miss one and the fines are serious, up to £30,000 per breach for some. Before a tenant moves in, and on an ongoing basis, you must:

✅ Gas safety certificate (CP12), an annual check by a Gas Safe engineer; give the tenant a copy before move-in and within 28 days of each renewal. Missing it is a criminal offence.
✅ Electrical safety (EICR), a satisfactory report every 5 years, mandatory for all rentals in England.
✅ Protect the deposit, in a government-approved scheme within 30 days, and give the tenant the prescribed information. Get this wrong and a tenant can claim 1 to 3× the deposit back.
✅ Smoke and carbon monoxide alarms, smoke alarm on every storey, a CO alarm in any room with a fixed combustion appliance.
✅ Right to Rent check, confirm the tenant can legally rent in the UK, and keep records.
✅ Give the "How to Rent" guide, the current version, before move-in.
✅ A valid EPC, currently minimum E, but that's changing (see below).
✅ Check for licensing, some councils require a selective or additional licence even for a standard single let, and HMOs (houses in multiple occupation) have their own mandatory licensing. Always check with the local council.

🆕The 2026 changes every new landlord must know

If you take one thing from this guide, take this section, the rules have genuinely changed.

The Renters' Rights Act 2025. It received Royal Assent in October 2025 and the headline change lands on 1 May 2026: Section 21 "no-fault" evictions are abolished. From that date you can only regain possession using specific legal grounds under Section 8 (for example, selling up, moving in a close family member, or serious rent arrears). Fixed-term ASTs are being replaced by rolling periodic tenancies , tenants can leave on two months' notice, but you can't end a tenancy just because a fixed term is up. Serving an old-style Section 21 after the cut-off can bring a civil penalty of up to £7,000. It makes choosing the right tenant at the start more important than ever.

EPC C by 2030. In January 2026 the government confirmed that rented homes in England and Wales will need an EPC rating of at least C by 1 October 2030 (up from E today), for all tenancies. There's a £10,000 cost cap per property and proposed penalties up to £30,000. If you're buying now, factor in the cost of getting a lower- rated property up to a C, or favour one that's already efficient. Our guides on EPC rules and funding EPC upgrades go deeper.

🔧Running your rental, agent or DIY, and insurance

Letting agent vs self-managing. A full-management agent handles marketing, referencing, rent collection, repairs and compliance for typically 10 to 15% of the rent (plus VAT); rent-collection-only is cheaper at around 5 to 8%. Self-managing saves the fee but the legal duties, referencing and admin all fall to you. For a first-time landlord, a good agent is often worth it while you learn the ropes.

Insurance you'll want. Standard home insurance won't do. You need landlord (buildings) insurance (roughly £150, £400/year), and it's well worth adding rent guarantee and legal expenses cover (around £100, £250/year). Since Section 21 was abolished, removing a non-paying tenant now runs through the courts and can take many months, rent guarantee is arguably the highest-value insurance a landlord can buy in 2026. Note it usually only pays out if you referenced the tenant properly at the start.

🪜Step-by-step: buying your first buy-to-let

1. Do the sums first. Work out the total cash you need and the net yield before you fall in love with a property.
2. Get a decision in principle. A broker confirms what you can borrow and which lenders take first-time landlords.
3. Choose the right property and tenant type. Location drives everything, rental demand, the tenant profile (families, professionals, students) and the yield.
4. Decide the ownership structure. Personal name or limited company, settle this with a tax adviser before you offer.
5. Make an offer and instruct a solicitor. Line up a conveyancer experienced in buy-to-let.
6. Get the mortgage and survey done. The lender values the property and checks the rent stacks up against its stress test.
7. Get compliant before move-in. Gas, electrics, EPC, alarms, deposit scheme, Right to Rent, How to Rent guide.
8. Reference the tenant and sign up. Then protect the deposit and hand over the keys, you're a landlord.

⚠️The risks, and protecting yourself

Go in with your eyes open: void periods (no rent while the property sits empty), rent arrears (harder and slower to resolve since Section 21 ended), rising interest rates at remortgage time, falling values, and big one-off repairs. None of these are reasons not to invest, they're reasons to keep a cash buffer, insure properly, and not over-stretch on day one.

It's also worth protecting the income and the mortgage themselves. If your rental relies on your own earnings to cover shortfalls, income protection and life cover make sure a serious illness or death doesn't force a fire-sale. Debbie at DS Financial can set this up alongside the mortgage.