| Present "refund" | I | refund | |
| Present Continuous "refund" | I | am refunding | |
| Simple past "refund" | I | refunded | |
| Past Continuous "refund" | I | was refunding | |
| Present perfect "refund" | I | have refunded | |
| Present perfect continuous "refund" | I | have been refunding | |
| Past perfect "refund" | I | had refunded | |
| Past perfect continuous "refund" | I | had been refunding | |
| Future "refund" | I | will refund | |
| Future continuous "refund" | I | will be refunding | |
| Future perfect "refund" | I | will have refunded | |
| Future perfect continuous "refund" | I | will have been refunding |