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Property Portfolio Tracking: What Landlords Need

By the FIQ team·13 January 2026·1 min read
Property books are in beta.

UK landlords have a lot to keep track of. Rental income must be declared through Self Assessment. Mortgage interest relief is now limited to a basic rate tax credit. Maintenance, letting agent fees and empty periods all affect profit. Many landlords with one to five properties still keep track with spreadsheets or a folder of receipts, because most property tools are built for large commercial portfolios.

Personal includes rental books for property you own personally. You record the rent and costs for each property, and they are grouped the way the SA105 property pages of the Self Assessment return ask for them. You also get an estimate of your mortgage interest tax credit, and if you own a property jointly you can set your share so the figures reflect your part. Property values are the ones you enter yourself.

Because the books sit inside Personal, your rental profit is included on the tax page alongside your other income. For a landlord who also has a job, a pension and a household budget, having it in one place makes it harder for anything to slip. There is more on Financial IQ for landlords.

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