Buy on a 0% purchases card, invest the cash you'd have spent, pay the minimums, clear the card at the end.
Annual return is compounded monthly (0.597% per month at 7.4%).
| Month | Start bal | Min pay | End bal | Growth | Pot |
|---|---|---|---|---|---|
| 1 | £8,500.00 | £85.00 | £8,415.00 | £50.72 | £8,550.72 |
| 2 | £8,415.00 | £84.15 | £8,330.85 | £51.02 | £8,601.74 |
| 3 | £8,330.85 | £83.31 | £8,247.54 | £51.33 | £8,653.07 |
| 4 | £8,247.54 | £82.48 | £8,165.07 | £51.63 | £8,704.70 |
| 5 | £8,165.07 | £81.65 | £8,083.42 | £51.94 | £8,756.64 |
| 6 | £8,083.42 | £80.83 | £8,002.58 | £52.25 | £8,808.89 |
| 7 | £8,002.58 | £80.03 | £7,922.56 | £52.56 | £8,861.45 |
| 8 | £7,922.56 | £79.23 | £7,843.33 | £52.88 | £8,914.32 |
| 9 | £7,843.33 | £78.43 | £7,764.90 | £53.19 | £8,967.52 |
| 10 | £7,764.90 | £77.65 | £7,687.25 | £53.51 | £9,021.02 |
| 11 | £7,687.25 | £76.87 | £7,610.38 | £53.83 | £9,074.85 |
| 12 | £7,610.38 | £76.10 | £7,534.27 | £54.15 | £9,129.00 |
| 13 | £7,534.27 | £75.34 | £7,458.93 | £54.47 | £9,183.47 |
| 14 | £7,458.93 | £74.59 | £7,384.34 | £54.80 | £9,238.27 |
| 15 | £7,384.34 | £73.84 | £7,310.50 | £55.12 | £9,293.39 |
| 16 | £7,310.50 | £73.10 | £7,237.39 | £55.45 | £9,348.85 |
| 17 | £7,237.39 | £72.37 | £7,165.02 | £55.78 | £9,404.63 |
| 18 | £7,165.02 | £71.65 | £7,093.37 | £56.12 | £9,460.75 |
| 19 | £7,093.37 | £70.93 | £7,022.43 | £56.45 | £9,517.20 |
| 20 | £7,022.43 | £70.22 | £6,952.21 | £56.79 | £9,573.98 |
| 21 | £6,952.21 | £69.52 | £6,882.69 | £57.13 | £9,631.11 |
| 22 | £6,882.69 | £68.83 | £6,813.86 | £57.47 | £9,688.58 |
| 23 | £6,813.86 | £68.14 | £6,745.72 | £57.81 | £9,746.39 |
| 24 | £6,745.72 | £67.46 | £6,678.26 | £58.16 | £9,804.55 |
| 25 | £6,678.26 | £66.78 | £6,611.48 | £58.50 | £9,863.05 |
| 26 | £6,611.48 | £66.11 | £6,545.37 | £58.85 | £9,921.90 |
| 27 | £6,545.37 | £65.45 | £6,479.91 | £59.20 | £9,981.10 |
| 28 | £6,479.91 | £64.80 | £6,415.11 | £59.56 | £10,040.66 |
| 29 | £6,415.11 | £64.15 | £6,350.96 | £59.91 | £10,100.57 |
| 30 | £6,350.96 | £63.51 | £6,287.45 | £60.27 | £10,160.84 |
| 31 | £6,287.45 | £62.87 | £6,224.58 | £60.63 | £10,221.47 |
| 32 | £6,224.58 | £62.25 | £6,162.33 | £60.99 | £10,282.46 |
| 33 | £6,162.33 | £61.62 | £6,100.71 | £61.35 | £10,343.81 |
| 34 | £6,100.71 | £61.01 | £6,039.70 | £61.72 | £10,405.53 |
| 35 | £6,039.70 | £60.40 | £5,979.31 | £62.09 | £10,467.62 |
| 36 | £5,979.31 | £59.79 | £5,919.51 | £62.46 | £10,530.08 |