Unused earned leave is paid out at your one-day wage, your basic plus DA divided by 26. Pick a basic salary to see the encashment for common leave balances.
Earned leave that you do not take can be converted to cash, either each year or when you leave. The standard calculation is basic plus dearness allowance divided by 26, multiplied by the days encashed. Because the day rate scales with basic, a higher basic means a higher payout for the same number of days. These pages fix the basic and vary the days so you can read off your case, then confirm the exact rule with the leave encashment definition.
Two things decide what you actually receive. The first is which leave counts: usually only earned or privilege leave is encashable, while casual and sick leave lapse, and many policies cap how many days carry forward. The second is timing and tax: encashment during service is fully taxable at your slab, while encashment at retirement or final exit is treated more favourably for non-government employees up to a specified limit. Pick a basic salary above to see the payout for common balances, and read it alongside the full and final settlement guide to see how it fits your exit dues. Remember that the day rate here uses basic plus dearness allowance on a 26-day month, so if your policy encashes on a different base or divisor, adjust the figure accordingly before relying on it.