2026/27 estimate · individual residential landlords
Landlord Tax Calculator UK
Compare rental profit using actual allowable running costs or the £1,000 property allowance, then estimate the Income Tax attributable to the property. Mortgage interest is handled separately under the residential finance-cost rules.
Income before expenses or the property allowance.
For example, employment or pension income. This helps place property profit into tax bands.
Not deducted as an ordinary expense for an individual residential landlord.
The property allowance replaces actual expense deductions and cannot be combined with the residential finance-cost tax reduction.
How the landlord calculation works
Start with gross rental income. Under the actual-expenses method, qualifying day-to-day running costs are deducted to reach property profit. Under the property-allowance method, up to £1,000 is deducted instead of actual expenses. For qualifying property income of £1,000 or less, full property-allowance relief may mean there is no taxable property profit.
For an individual with residential property, mortgage interest is treated differently from ordinary expenses. The calculator does not subtract it when calculating rental profit. When actual expenses are selected, it estimates the basic-rate finance-cost tax reduction using the lower-value limits reflected in HMRC guidance.
Other taxable income matters because rental profit sits on top of it when Income Tax bands are applied. That means two landlords with the same rental profit can have different tax estimates if their employment, pension or other taxable income differs.
Real-world example: actual expenses
A landlord receives £24,000 rent, has £4,000 of qualifying running costs and £8,500 mortgage interest, and has £40,000 of other taxable income. Using actual expenses gives £20,000 property profit. On the calculator's 2026/27 assumptions, tax attributable to that property profit is £5,946 before the simplified £1,700 finance-cost reduction, leaving an estimated £4,246 property-tax amount.
The mortgage interest still affects real cash flow even though it is not deducted when calculating property profit. With the entered running costs, mortgage interest and estimated tax, this example leaves £7,254 of rental cash after those items. It is an illustration, not a substitute for the landlord's actual Self Assessment calculation.
Practical calculator guidance
Preparing a landlord tax estimate
Use gross rent and other property receipts before agent deductions, then enter supported property running costs. Residential finance costs for an individual are considered separately from ordinary expenses, and the calculator should not be used as though mortgage capital repayments reduce rental profit.
Reconcile gross rent and agent statements
If an agent collects £1,200 and transfers £1,050 after fees, the records should normally show the full rent and the separate agent cost. Include retained deposits that become income, service payments and other amounts connected with the letting where relevant. Track void periods, refunds and jointly owned shares so the annual total can be explained.
Distinguish repairs from improvements
Routine repairs, insurance, agent fees, safety checks and services paid by the landlord may differ from capital improvements that enhance the property. Replacing an item with a modern equivalent can have different treatment from creating something new. Keep invoices describing the work, photographs where useful and notes showing whether the cost restored or improved the asset.
Finance costs require a separate step
For many individual residential landlords, mortgage interest is not deducted like an ordinary property expense and may instead contribute to a basic-rate finance-cost tax reduction, subject to limits. Capital repayments are not interest. Companies and some other property businesses can be treated differently, so confirm ownership before using an individual-landlord estimate.
Worked example
A landlord receives £15,600 gross rent. Agent fees are £1,560, insurance is £280, qualifying repairs are £900 and safety costs are £220. Mortgage interest is £4,000 and is entered separately from those running costs. The landlord also has PAYE income, which affects the rate on property profit. They retain the agent ledger, mortgage statement and repair invoices.
Related tools and landlord guidance
How this guidance is reviewed
Author
Written and maintained by UK Tax Toolbox, led by founder Conor Dwyer. Calculator assumptions are checked against the public sources linked on the page.
Last reviewed
12 August 2026
Basis of guidance
Public HMRC and GOV.UK guidance, published tax thresholds and the calculator assumptions stated on each page.
Useful official references
Spot something that looks out of date? Use the contact page to flag corrections. Important tax decisions should still be checked with HMRC or a qualified adviser.