SGBs give an interest of 2.50% (fixed rate) per annum on the initial investment amount. This interest will be credited semi-annually to your bank account and the last interest will be payable on maturity along with the principal.
Example: If an SGB is launched at a price of ₹5,000, then 2.5% of which is ₹125. You'll receive ₹62.5 every 6 months for each unit you own, till maturity