XPayroll by default uses IMPS for any payout, which is available 24/7 and works on all days, irrespective of whether it's a bank holiday or weekend. However, under certain cases the payment mode will switch to NEFT automatically -
If the payout amount is greater than Rs 2,00,000.
If the organization has overridden the default settings under Settings > Payments & Compliance Setup, and chosen NEFT transfers.
If an employee has chosen NEFT transfers under their payment information setup.
If a money transfer has been made using NEFT when NEFT is unavailable, then the transfer will remain in Pending status until NEFT is available again, and the beneficiary will receive the funds after that.