There is no change to dividend tax rates in 2019/20:
The tax-free dividend allowance is £2,000
Basic-rate taxpayers pay 7.5% on dividends
Higher-rate taxpayers pay 32.5% on dividends
Additional-rate taxpayers pay 38.1% on dividends.
Pensions contributions receive full income tax relief, this means it only costs basic rate taxpayers £80 to save £100 (20 per cent tax relief) while higher rate taxpayers only need to pay £60 to save £100 (40 per cent tax relief).