The other answers are correct in that you are not able to keep the 1000 or $2000 gift given to you by EZIC. This is because the inspector's savings will be confiscated.
However, there is a way to retain $75 of those credits, which is already a big bonus if you're not playing on Easy Mode.
This is done by upgrading to a class-7 apartment on day 12, then downgrading back to class-8 immediately the day after. By doing this, you are practically investing your money in the apartment, and then dropping out after your savings are confiscated.