If you haven’t filed your taxes, you are generally in a more advantageous position.

That’s because you can still take every tax deduction you are legally entitled to in order to reduce your tax liability.

More tips on filing back taxes.

If you’ve already filed taxes, your tax professional should quickly review those returns to determine if they are accurate and if you were entitled to deductions you overlooked. Amending a return requires a substantial amount of paperwork and reprocessing. Amended returns must be thoroughly accurate with lots of supporting documentation, or else you risk an IRS audit.

Generally speaking, you’ll want your tax professional to retrieve a complete set of documentation from the IRS and compare that information to the tax documents you already have. After a thorough review of your tax situation, the tax professional will advise you whether it makes sense to file an amendment. More tips on amending your tax returns.