| Present "bill" | I | bill | |
| Present Continuous "bill" | I | am billing | |
| Simple past "bill" | I | billed | |
| Past Continuous "bill" | I | was billing | |
| Present perfect "bill" | I | have billed | |
| Present perfect continuous "bill" | I | have been billing | |
| Past perfect "bill" | I | had billed | |
| Past perfect continuous "bill" | I | had been billing | |
| Future "bill" | I | will bill | |
| Future continuous "bill" | I | will be billing | |
| Future perfect "bill" | I | will have billed | |
| Future perfect continuous "bill" | I | will have been billing |