Today's capital allowances Budget changes might sound like a giveaway with a new 40% First-Year Allowances (FYA) for all businesses (with extensions for leasing) but that 18% to 14% Writing Down Allowance (WDA) reduction for existing 'main rate' plant or machinery (P&M) means that overall HM Treasury is hoping to raise an extra £1bn to £1.5bn annually from 2026/27.