How a Property Tax Accountant in Milton Keynes Calculates Your Rental Income Tax

Starting with what HMRC actually counts as rental income A Property Tax Accountant in Milton Keynes begins by establishing exactly what counts as income. Many landlords assume it is only the monthly rent. In practice, HMRC also expects premiums, charges for services such as cleaning communal areas, and sometimes tenant-paid fees to be included. Next comes the basis of accounting. Landlords with property income under £150,000 can use the cash basis by default, which means taxing what you receive and deducting what you pay in the tax year. Larger portfolios, or those who opt out, use accruals accounting. The property allowance versus claiming real expenses If your gross property income is £1,000 or less, the property allowance can mean no tax and no reporting. Above that, you choose between deducting the £1,000 allowance or deducting actual expenses. Most Milton Keynes landlords with a mortgage and an agent are far better off claiming actual costs. Allowable costs that regularly get missed Allowable expenses must be wholly and exclusively for the rental business. The ones I most often see missed are: Letting agent fees and tenant-finding charges Landlord insurance and gas safety certificates Repairs and maintenance (restoring, not improving) Accountancy fees and ground rent or service charges Replacement of domestic items, such as a worn-out cooker, where the new one is a like-for-like replacement Improvements, such as adding an extension to a Shenley Church End semi, are capital and belong in the capital gains calculation on sale, not in your rental profit. Income tax rates applied to rental profit Rental profit is added to your other income and taxed at your marginal rates. For 2026/27 (England and Northern Ireland; Scotland has its own bands): Band Taxable income Rate Personal Allowance Up to £12,570 0% Basic rate £12,571 to £50,270 20% Higher rate £50,271 to £125,140 40% Additional rate Over £125,140 45% The Personal Allowance reduces by £1 for every £2 of income over £100,000. The government has announced that property income rates will rise by two percentage points from April 2027, so planning now matters. Section 24 and mortgage interest Since April 2020, individual landlords cannot deduct mortgage interest from rental profit. Instead, they receive a basic-rate (20%) tax credit on finance costs. For higher-rate taxpayers, this is a significant hidden cost. Take a worked example. Sarah earns £45,000 as an employee and has rent of £24,000, allowable expenses of £4,000 and mortgage interest of £8,000. Her rental profit is £20,000. She has £5,270 of basic-rate band left, so £5,270 is taxed at 20% (£1,054) and £14,730 at 40% (£5,892). That is £6,946 before the credit. Her finance cost credit is £8,000 × 20% = £1,600, leaving £5,346 payable. Without Section 24, her tax would have been much lower. Joint ownership and spouse splitting Married couples and civil partners are normally taxed 50/50 on jointly owned property, regardless of who pays the mortgage. Unequal splits are possible where the beneficial ownership is genuinely unequal, supported by a Form 17 declaration to HMRC. I regularly use this to move income to a spouse with unused basic-rate band. Registering for Self Assessment and filing correctly If your rental income exceeds £1,000 and isn't fully covered by PAYE adjustments, you must register for Self Assessment by 5 October following the tax year in which the income arose. The SA105 UK property pages go with your SA100 return. The key dates are: Obligation Deadline Register for Self Assessment 5 October after year end Paper return 31 October Online return and balancing payment 31 January First payment on account 31 January Second payment on account 31 July A late return attracts an immediate £100 penalty, rising with time, plus interest and late-payment penalties. Payments on account catch landlords out If your last bill was over £1,000 and less than 80% was collected at source, HMRC asks for two instalments, each 50% of the previous year's liability. First-year landlords often find they owe the balance plus 50% on account in the same January. I advise setting aside roughly 25% to 30% of net rent monthly. Making Tax Digital for Income Tax From 6 April 2026, landlords and sole traders with combined qualifying income over £50,000 must keep digital records and send quarterly updates through compatible software. The threshold drops to £30,000 from April 2027 and £20,000 from April 2028. Quarterly updates are not tax payments, but they require tidy records throughout the year, not a shoebox in January. Holding property personally or through a limited company Many Milton Keynes investors ask whether a company is better. A company pays corporation tax (19% on profits up to £50,000, 25% above £250,000, with marginal relief between), and its mortgage interest remains deductible. However, extracting profit as dividends triggers further personal tax, and incorporating existing property can trigger CGT and Stamp Duty Land Tax. For a long-term, reinvesting portfolio, a company can work. For someone drawing the income, it often doesn't. Furnished holiday lets, HMOs and rent-a-room The furnished holiday let regime was abolished from April 2025, so these now follow standard property rules. HMOs run for shared housing are taxed in the same way as other lettings, but licensing costs and fire safety compliance are often allowable. Rent-a-room relief gives a £7,500 tax-free allowance if you let a furnished room in your own home. Reporting what you owe on a sale Residential property gains are taxed at 18% (basic rate) or 24% (higher rate), after the £3,000 annual exempt amount. A UK residential sale with tax due must be reported and paid within 60 days of completion through HMRC's online property service. Missing this deadline is one of the most expensive mistakes I see. Keeping records HMRC will accept Keep invoices, bank statements, tenancy agreements and mileage logs for at least five years after the 31 January filing deadline. A dedicated landlord bank account makes the year-end process dramatically easier and helps if HMRC opens an enquiry. Letting agents, voids and bad debts Agent commission, void periods and genuine rent arrears all affect your profit. Under the cash basis, unpaid rent is simply never taxed. Under accruals, a bad debt may be deducted if it is genuinely irrecoverable. Don't guess; the treatment depends on which basis you're on. Using losses and carrying them forward Rental losses can't be offset against salary. They are carried forward against future profits from the same UK property business. A new landlord who has a heavily repaired purchase should see this as a planning factor, not a wasted year. Tenant deposits, repairs versus improvements Deposits protected in a scheme aren't income unless you retain them for damage or arrears. The repairs-versus-improvements line is where HMRC enquiries most often start. Replacing like with like is generally revenue; upgrading a kitchen beyond the original standard may be capital in part. When HMRC sends a letter HMRC runs nudge campaigns and "Let Property" campaigns using data from letting agents and deposit schemes. If you have undeclared income, disclose voluntarily before HMRC contacts you, as penalties are materially lower for unprompted disclosures. Choosing and working with the right adviser Look for a firm that handles Section 24 modelling, Making Tax Digital software, CGT reporting and company structuring together. A good Property Tax Accountant in Milton Keynes won't just file your SA105; they will model next year's position, check your ownership split and stress-test your finance costs. In conclusion, rental income tax is manageable once you know which rules apply to you. Get the basis of accounting right, claim every legitimate expense, plan around Section 24, and meet the Self Assessment, Making Tax Digital and 60-day CGT deadlines. A Milton Keynes landlord who gets professional advice early will usually save far more than the fee costs. Rates and thresholds change, so confirm them against current HMRC guidance for the relevant tax year before you act.