How to Reduce Your Tax Bill as a Landlord — Nine Things Worth Knowing

Being a landlord has become increasingly expensive in recent years. Between mortgage rate rises, regulatory changes, and the gradual removal of mortgage interest relief, many landlords are paying more tax than they need to simply because they aren't claiming everything they're entitled to.

This post runs through nine practical ways to reduce your income tax bill as a landlord — not through loopholes or aggressive planning, but by making proper use of the reliefs HMRC already allows.

1. Make sure you're claiming all your allowable expenses

This sounds obvious, but it's the area where landlords most commonly leave money on the table. Tax is calculated on your profit — rental income minus allowable expenses — so every legitimate cost you fail to claim means you're paying more tax than necessary.

Allowable expenses for landlords typically include property maintenance and repairs, letting agent fees, property management costs, buildings and landlord insurance premiums, utility bills where you're responsible for them, and accounting fees. Ground rent and service charges on leasehold properties can also be claimed, as can any rates on commercial properties.

The key distinction to understand is the difference between repairs and improvements. Fixing a broken boiler is a repair and can be claimed as an expense in the year it's incurred. Replacing a basic boiler with a high-spec system that adds value to the property is an improvement — that's a capital cost, treated differently for tax purposes.

2. Claim costs incurred before your first tenant moves in

A lot of landlords don't realise that expenses incurred before the property starts generating rental income can still be claimed. These are known as pre-trading expenditures.

If you spent money on solicitor fees, essential repairs, refurbishment work, or advertising to find your first tenants before the property was let, those costs are treated as if they were incurred on the first day your property business started. They can be claimed against your rental income in your first year of trading — which can meaningfully reduce your tax bill in what's often the most expensive year of getting a rental property up and running.

3. Carry forward rental losses

If your rental expenses exceed your rental income in any given year — perhaps because of a long void period, a major unexpected repair, or significant refurbishment work — you won't just lose that loss. It can be carried forward and offset against future rental profits, reducing your tax bill in subsequent years.

This is particularly useful during renovations or difficult market conditions where a property isn't generating much income but costs are still being incurred. Keeping accurate records of losses year by year means you're not leaving that relief unclaimed.

4. Claim your travel costs properly

If you travel to your rental properties — to carry out inspections, meet tenants, deal with repairs, or visit your letting agent — those travel costs can be claimed as a business expense. This includes fuel, public transport, parking, and in some cases accommodation if you're travelling to manage a distant property.

The rule HMRC applies is that the travel must be "wholly and exclusively" for the purposes of your property business. A trip to your rental property followed by a personal errand on the way home doesn't qualify in full — only the business element does.

If you manage your properties from home, you may also be able to claim a proportion of your household running costs — electricity, broadband, council tax — as a home office expense. Only the portion genuinely used for business qualifies, so you'll need to make a reasonable calculation based on space and time.

Landlords with properties abroad can also claim travel costs for managing those properties, as long as the purpose is business-related.

5. Claim general property running costs

Day-to-day costs of keeping your properties in good lettable condition are fully deductible. This includes cleaning, decorating between tenancies, pest control, garden maintenance, and routine repairs.

Advertising costs — online listings, professional photography, printed materials — are also allowable, as are legal fees related to tenant disputes, eviction proceedings, or drafting tenancy agreements.

None of these are glamorous claims, but they add up over the course of a year across one or more properties and can make a meaningful difference to your taxable profit.

6. Don't forget storage costs

If you store furniture, appliances, or equipment for your rental properties — particularly if you have furnished lets — the cost of that storage is a legitimate business expense. It's one of the more commonly overlooked claims, but if storage is a genuine requirement of running your property business, HMRC allows it.

7. Claim the cost of professional development

If you attend seminars, courses, or events that are directly related to running your property business — landlord compliance updates, tenant law, property management — those costs can generally be claimed.

The key is that the event needs to be relevant to your existing property business. A general property investment seminar or a course aimed at people looking to get into property for the first time is less likely to qualify than training specifically aimed at practising landlords. Keeping the booking confirmation and event details makes it easier to demonstrate relevance if HMRC ever asks.

8. Make use of capital allowances

Capital allowances allow you to claim tax relief on certain longer-term investments in your property business that don't qualify as straightforward repairs or running costs.

For landlords, this can include equipment and tools used for property maintenance, vehicles used solely for your property business, and certain integral features of buildings such as heating systems. Furnished holiday lettings have historically had more generous capital allowances than standard residential lets, though the tax rules around furnished holiday lets have changed recently and are worth reviewing specifically.

Capital allowances are particularly valuable for landlords with larger portfolios or high setup and equipment costs, as the relief can be spread across multiple years.

9. Consider whether your ownership structure is still right for you

This one is less about claiming a specific expense and more about making sure the way you hold your properties is as tax-efficient as possible for your circumstances.

For landlords with a single property or modest income, holding property personally as a sole trader or in joint names with a partner is often perfectly sensible. But as portfolio size and rental income grows, the question of whether to hold properties in a limited company becomes more relevant — particularly because mortgage interest is fully deductible against rental income within a company structure, whereas individual landlords are now restricted to basic rate tax relief only.

There's no universal right answer here. The tax efficiency of a company structure depends on your income level, how much you need to draw from the rental income, your plans for the portfolio, and what happens to the properties eventually. It's also worth noting that transferring personally held properties into a company isn't cost-free — stamp duty and potentially Capital Gains Tax apply. Getting proper advice before making any structural change is essential.

A few things to keep in mind

Reducing your tax bill as a landlord is about claiming what you're genuinely entitled to and making sure your affairs are structured sensibly. It's not about finding loopholes — it's about not overpaying through missed claims or an ownership structure that no longer makes sense for where you are.

Good record keeping is the foundation of all of this. Keep invoices, receipts, and bank statements organised throughout the year rather than trying to piece everything together in January. The better your records, the easier it is to claim everything you should and the less stressful the Self Assessment process becomes.

We can help

At Alera Accounting & Advisory, we work with landlords across South Wales and beyond — from those with a single buy-to-let through to landlords managing larger portfolios. We can help you make sure you're claiming every expense you're entitled to, review whether your ownership structure is still working for you, and take the stress out of your Self Assessment return each year.

If you'd like a conversation about your rental property tax position, get in touch with our team today.