Resources We’ve split our resources into two categories: the Tax Centre and Business Centre. Some of our resources require you to be logged in to access them. You can log in here or register here. Tax Centre Special Tax Reports Tax Calculators Tax Helpsheets HMRC Forms Personal Tax Organiser Tax-Busting Checklist Tax Calendar Tax Rates and Allowances The Budget Useful Tax Links Business Centre Special Business Reports Business & Financial Calculators Business Helpsheets Brilliant Business Books Companies House Forms Company Searches & Credit Checks Historical Market Data Useful Links Useful Office Software