Tax season arrives. You do your self-assessment. You pay your bill. Then you find out from another landlord that you could have deducted something. Too late now. This happens to thousands of landlords every year. The average landlord misses £2,000-£5,000 in deductions annually. Over a 10-year portfolio, that's £20,000-£50,000 in unnecessary tax. This guide provides the complete list of tax deductions every landlord should claim, how to track them, and how to maximize your tax