I received a letter that I am being audited for my 2015 tax year, will this affect my 2018 return that I have filed before receiving the notice?

[MelaineC]

It depends.  Usually, it does not.  If you are to receive a refund and end up owing after the audit, they can deduct the amount you owe from your refund, but only if you do not receive your refund before the audit.  However, if you owe nothing after the audit, again, you will receive your refund.  But it is difficult to say exactly what will happen, it all depends on the IRS or the State, whoever sent the notice of the audit.

[bmarshal9]

The audit letter is requesting proof of my 2015 car expense and is giving me 30 days to respond. Does this mean that my current year refund will be delayed until the audit is closed?