Income tax personal allowances
The basic personal allowance for 2018/19 is £11,850 The higher rate threshold including the personal allowance is £46,350.
Monthly primary threshold increased to £702 from 6th April 2018.
Threshold for registration is currently £85,000. Deregistration limit is £83,000.
Main and small profits rate is 19% for 2018/19.
A National Insurance allowance of £3,000 for 2018/19 can be offset against Class 1 secondary NI liabilities.
Annual Investment Allowance
The current annual investment allowance is £200,000 per annum.