Will August help with landlord tax beyond MTD?

Yes. August logs your expenses in HMRC categories as you go, including mortgage interest, repairs, insurance, ground rent and service charges, and lets you set recurring costs so they are recorded automatically. It is worth remembering that mortgage interest is now relieved as a basic-rate tax credit rather than deducted in full, so August records the interest in full and your return or accountant applies the relief. The income and expense reports give you a clear profit position per property, which often shows which property is actually making money.