Dividend tax doesn't equate to income tax. You pay the corporation tax, then let's say the personal allowance has been used up by taking a gross salary of £11,000. And let's say the rest of your income is dividends. The next tax band to consider is the basic rate tax band from £0 to £32,000. Dividends falling within this band are taxed at 7.5%. But the first £5,000 within that band are not taxed at all, due to the Dividend Tax Allowance (DTA) of £5,000 - so only £27,000 of the £32,000 is taxed at 7.5% (£2,025).
Any dividends income falling in the higher rate band (currently from £32,001 to £150,000) then attracts the 32.5% higher rate of tax. Then any dividends in excess of £150,000 are subject to a rate of 38.1%. Dividends do not attract employer NICs, so you may decide to pay yourself entirely in dividends instead. Although an ~£11k salary can provide some flexibility at low cost.
Actually, sorry, the DTA has been reduced to only £2k now and my tax bands above are outdated. Do your calculations for the new tax year here: