Ok, generally speaking a landlord can only apply a security deposit to repairs in an apartment that are beyond what is known as normal wear and tear.  What is normal wear and tear differs from state to state and person to person.  There is a generality that it must be a reasonableness standard.  Painting is not generally above and beyond normal wear and tear although some states do specifically state that it can be used for painting.  Indiana does not so state. Now, what you need to do is to "trigger" the statute for return of the security deposit, meaning that you must by Indiana law give your landlord your mailing address for return of your security and/or notice of their intent to apply it to the painting (which they have to do) IN WRITING.  So I would suggest that you send it by certified mail return receipt requested.  If he does not return it or advises otherwise you can take him to court for it and you are entitled to reasonable attorney's fees.  Take lots of pictures of the home upon vacating.  You need proof.  Good luck.