Q: In a recent column you mentioned Division 293 tax, an extra 15 per cent that anyone on income above $250,000 must pay on tax concessional contributions to super. I’m nearing retirement and thinking about selling shares to boost my super savings with after-tax contributions. My salary is $200,000 plus super, but I expect the share sale will increase my taxable income above $300,000. How will Division 293 affect me? I have also heard it is possible to use tax deductions to charities to help offset this? Frank.

A: Yes, Division 293 tax is an additional 15 per cent tax payable on concessional contributions to super if what is described as your “adjusted taxable income” exceeds $250,000.