Landlord tax cases, and what actually moved the bill.

Starting position. The landlord had never reported the rent, assuming the mortgage payments cancelled out the income. Only the interest element ever gave relief, and that as a 20% reducer.

What we did. Came forward unprompted and evidenced careless rather than deliberate behaviour, which kept the disclosure inside the six-year window instead of twenty and moved the penalty into the unprompted careless range, which starts at nil.

Result. Letting agent commission, safety certificates and insurance, and replacement of domestic items relief cut the taxable profit for every year in scope. Interest still ran on the tax, but the penalty was the smaller part of the settlement.

Starting position. Local tax had been paid on the rent and the owner assumed nothing was due here. A nudge letter arrived after HMRC received account data under the Common Reporting Standard.

What we did. Recomputed the profit under UK rules rather than copying the foreign return, then claimed double taxation relief for the overseas tax already paid.

Result. Correct sterling conversion, UK-basis deductions and a properly evidenced behaviour position removed most of the liability the raw foreign figures implied, and kept the offshore penalty band at the lower end.

Starting position. Four mortgaged properties held personally, with interest costs restricted and the landlord drawing the rental profit each year to live on.

What we did. Modelled corporation tax with interest fully deductible inside a company against the cost of getting there: capital gains on transfer, additional-dwelling stamp duty, lender terms and the second layer of tax on dividends.

Result. Incorporation only paid for itself where profits were retained and reinvested. For a landlord drawing everything out, staying personally owned and tightening the expense claim was the cheaper answer.