How The SRS Trade-Off Works

Money you put into the Supplementary Retirement Scheme is deducted from your chargeable income for the year, so you save tax at your top rate. The catch comes later: when you take the money out on or after your prescribed retirement age, half of each withdrawal is added to your income for that year and taxed.

The deal is usually best for people with a high tax rate now and low taxable income in retirement. Because only half is taxed and the first $20,000 of chargeable income is taxed at 0%, someone with no other income can take out up to $40,000 a year without paying tax. Spreading withdrawals over the full 10 years keeps more of each year's taxable part in the low bands.

Taking money out before the retirement age reverses most of the benefit: the whole amount is taxed and a 5% penalty is added. The growth figures here are an illustration you choose, not a forecast, and the comparison assumes you would have earned the same return investing the money outside SRS.