What a landlord tax accountant in Watford actually does
Most landlords we speak to are not short of paperwork. They have agent statements, mortgage letters, receipts for a new boiler part and a stack of council tax bills from the weeks the house sat empty. What they want is someone to turn that pile into a correct return, and to know the tax bill well before 31/1 comes round.
As your landlord tax accountant in Watford, we prepare the property pages of your self assessment return, sort allowable costs from capital spending and check the figures against your letting agent's statements. If something looks wrong, such as a repair that is really an improvement, we tell you and explain why. Most clients send documents by email and talk things through on a video call. If you would rather sit down in person, a meeting at our office on St Albans Road can be arranged.
When rental income has to be reported
The first £1,000 a year of property income is tax free under the property allowance. Once your rent goes above £1,000, you need to tell HMRC. A full self assessment return is needed if your rental profit is more than £2,500 after allowable expenses, or your rent is more than £10,000 before expenses.
That second test catches people out. A two bedroom flat in Bushey or Hemel Hempstead will usually bring in more than £10,000 a year, so a return is due even in a year when repairs ate most of the profit. You can use the £1,000 allowance or claim your real costs, but not both, and we work out which leaves you better off.
If you have missed earlier years, put it right before HMRC writes to you. HMRC runs the Let Property Campaign for landlords who need to disclose past rental income, and we can prepare the figures and the disclosure with you.
What is included
- Property pages of your self assessment return
- Checking letting agent statements
- Sorting repairs from improvements
- Mortgage interest credit calculations
- Replacement of furnished items claims
- Joint ownership and unequal shares advice
- Making Tax Digital setup and quarterly updates
- Help with past years through the Let Property Campaign
Costs you can set against the rent
HMRC lets you deduct money you spend on the day to day running of the let. For most local landlords the regular items look like this:
- Letting agent and management fees
- Buildings and contents insurance
- Repairs and maintenance, but not improvements
- Ground rent and service charges on flats
- Council tax and utility bills you pay yourself
- Cleaning, gardening and other services you pay for
- Accountancy fees
Repairs, improvements and replacing furniture
The line between a repair and an improvement is where most mistakes happen. Swapping a tired kitchen for one of a similar standard is normally a repair. Building a rear extension to add a bedroom is an improvement. That cost cannot be set against rent, although it can reduce your taxable gain when you eventually sell.
If you let a furnished house or flat, you can claim the cost of replacing items such as a sofa, bed, fridge or carpet with a similar item. The first set of furniture you buy when you start letting is not covered. Only the replacement is.
Mortgage interest and the basic rate credit
Individual landlords cannot deduct mortgage interest from rental income. You get a tax credit at the basic rate of 20% on your finance costs instead. For a basic rate taxpayer the result is often similar. For a higher rate taxpayer it means paying tax on money that went straight to the bank.
This is why a good landlord tax accountant looks at all of your income, not just the rent. Someone with a good salary from one of the offices on Clarendon Road can find that rental profit pushes more of their income into the higher band, and the credit does not keep pace. A limited company can deduct interest as a cost, but a company does not suit everyone, and moving property you already own into one is usually treated as a sale.
From 6/4/2027 property income is due to be taxed at its own rates of 22%, 42% and 47%. We will show you what that means for your figures before the change arrives.
Couples and joint owners
Plenty of Hertfordshire landlords own with a husband, wife or civil partner. HMRC normally splits the rent from a jointly owned property 50:50 between married couples. If you really own it in unequal shares, you can send HMRC a declaration so that the income follows your true ownership. We check the title first, because the declaration has to reflect how the property is actually owned.
Unmarried partners, siblings and friends who buy together are each taxed on their own share. Each person files their own return, so the two sets of figures need to agree.
Making Tax Digital and selling a rental
Making Tax Digital for Income Tax means keeping digital records and sending HMRC quarterly updates. It started on 6/4/2026 for people whose rent plus self employed turnover was over £50,000. The limit drops to £30,000 from 6/4/2027 and £20,000 from 6/4/2028. Joint owners count only their own share of the rent. We can set up the software and send the updates for you.
When you sell a rental property, any capital gains tax must be reported and paid within 60 days of completion. Our capital gains tax advice page explains how the gain is worked out and which costs reduce it.
Who this suits
- First time landlords letting a flat in Watford
- Accidental landlords who kept their old home after moving
- Couples who own rental property together
- Landlords with several houses around Hertfordshire
- Higher rate taxpayers hit by the mortgage interest rules
Common questions
How much rent can I earn before I need a tax return?
You must tell HMRC once your property income goes above £1,000 a year. A full self assessment return is needed when your profit after expenses is over £2,500, or your rent before expenses is over £10,000. Most whole property lets pass the £10,000 mark.
Can I claim for a new sofa in my furnished flat?
Yes, if it replaces an old sofa with a similar one. The relief covers replacing furniture, appliances and furnishings. It does not cover the first items you buy when you furnish a property for letting.
Should I put my buy to let into a limited company?
It depends on your income, your plans and whether you already own the property. Companies can deduct mortgage interest, but taking money out of a company has its own tax cost. Moving a property you already own is usually treated as a sale, so we run the numbers before you decide.
Are tax rates on rental income going up?
Separate rates for property income of 22%, 42% and 47% are due to start on 6/4/2027. They would apply on top of the existing rule that limits mortgage interest relief to a basic rate credit. We can show you the likely effect on your own figures.
I let a room in my own house. Do I need a property accountant?
Often not. You may not need a property accountant at all, because the Rent a Room scheme covers furnished accommodation in the home you live in, and income within the limit is tax free with no return needed for it. It does not cover a separate flat, and you cannot claim expenses as well, so we can check whether it suits you.
Can I claim the cost of my loft conversion against the rent?
No. A loft conversion adds something new, so it counts as an improvement rather than a repair. It can still help you later, because improvement costs reduce the gain when you sell the property.
Do you work with landlords outside Watford?
Yes. We work with landlords in Rickmansworth, St Albans, Borehamwood and across Hertfordshire, and many clients never need to visit. Documents come by email and we talk on video calls, with meetings in Watford when you want one.