Making Tax Digital for Income Tax Self-Assessment Simplified for Self-Employment and Landlords. TaxNav is HMRC-recognised software that makes this easy, affordable, and fully compliant, helping you save time, reduce your tax bill, and navigate your income tax with ease. TaxNav is HMRC-recognised, MTD-compliant software, designed to: - Simplify digital record-keeping and submissions - Improve data safety with encryption and authentication Our software will help you reduce confusion and save time, reduce errors and avoid penalties, provide guidance to maximise deductions, and navigate self-assessment obligations with ease. TaxNav software is Excel spreadsheet-friendly and is purpose-built for the self-employed and landlords to manage their own records.