| Simple | Progressive | Perfect | Progressive |
| Present |
| I overestimate |
| you overestimate |
| he/she/it overestimates |
| we overestimate |
| you all overestimate |
| they overestimate |
|
| I am overestimating |
| you are overestimating |
| he/she/it is overestimating |
| we are overestimating |
| you all are overestimating |
| they are overestimating |
|
| I have overestimated |
| you have overestimated |
| he/she/it has overestimated |
| we have overestimated |
| you all have overestimated |
| they have overestimated |
|
| I have been overestimating |
| you have been overestimating |
| he/she/it has been overestimating |
| we have been overestimating |
| you all have been overestimating |
| they have been overestimating |
|
| Past |
| I overestimated |
| you overestimated |
| he/she/it overestimated |
| we overestimated |
| you all overestimated |
| they overestimated |
|
| I was overestimating |
| you were overestimating |
| he/she/it was overestimating |
| we were overestimating |
| you all were overestimating |
| they were overestimating |
|
| I had overestimated |
| you had overestimated |
| he/she/it had overestimated |
| we had overestimated |
| you all had overestimated |
| they had overestimated |
|
| I had been overestimating |
| you had been overestimating |
| he/she/it had been overestimating |
| we had been overestimating |
| you all had been overestimating |
| they had been overestimating |
|
| Future |
| I will overestimate |
| you will overestimate |
| he/she/it will overestimate |
| we will overestimate |
| you all will overestimate |
| they will overestimate |
|
| I will be overestimating |
| you will be overestimating |
| he/she/it will be overestimating |
| we are overestimating |
| you all will be overestimating |
| they will be overestimating |
|
| I will have overestimated |
| you will have overestimated |
| he/she/it will have overestimated |
| we will have overestimated |
| you all will have overestimated |
| they will have overestimated |
|
| I will have been overestimating |
| you will have been overestimating |
| he/she/it will have been overestimating |
| we will have been overestimating |
| you all will have been overestimating |
| they will have been overestimating |
|
