UK 2026/27 tax year · Updated 2026-06-10
The UK energy sector spans oil and gas, electricity generation and supply, and a fast-growing renewables and net-zero industry — wind, solar, heat pumps and retrofit. For households and businesses, Ofgem's price cap sets a benchmark for typical domestic bills, and domestic energy carries a reduced 5% rate of VAT, while most business energy is standard-rated at 20%. The sector is a major user of R&D tax credits, which reward genuine technical innovation in clean energy, storage and efficiency. Capital-intensive projects rely on capital allowances, including the annual investment allowance and full expensing, to relieve spend on plant and machinery. Specialist engineers and project staff often work as contractors through limited companies, so IR35 status — long a live issue in oil and gas and now in renewables — affects take-home pay. Companies also navigate corporation tax and, for some, windfall-style levies. These calculators help workers, contractors and energy firms estimate bills, take-home pay, company tax and innovation relief.
Estimate energy bills and running costs.
Estimate company and innovation taxes.
Work out take-home for staff and contractors.
Estimates for general guidance only, based on 2026/27 UK rates. Not financial advice.