Under normal circumstances, the maturity payment of national debt is generally to automatically transfer the principal and interest to the account on the maturity date. However, there are many types of national debt at present, and the processing time is different because of different issuing banks. Therefore, it is uncertain when the national debt will arrive after maturity. If it is the maturity date of the voucher-type national debt, you can redeem it directly at the bank outlet, and the principal and the last interest of the national debt will automatically return to the account on the same day. You can call or go directly to the bank for consultation.