If you've made a £1 crore long-term capital gain from stocks this financial year, you'll need to understand the tax implications, especially with your existing £54 lakh income. The tax on this capital gain is typically calculated at a rate of 12.5%, separate from your income tax slab rate applied to your salary and FD interest. This means the £1 crore gain itself won't be added to your taxable income for slab rate purposes, but will be taxed at the specified capital gains rate.