Donald Trump refuses to release his tax returns with an excuse that he is being audited. But as far as I know, none of Trump’s tax returns for many years have been released.

The IRS indicates tax returns under audit can be released. So the excuse does not seem to be valid.

The IRS FAQ below suggest audit usually done within 3 years of filing but they can go back 6 years even if there are substantial errors.

How far back can the IRS go to audit my return?

Generally, the IRS can include returns filed within the last three years in an audit. Additional years can be added if a substantial error is identified. Generally, if a substantial error is identified, the IRS will not go back more than the last six years.

The IRS tries to audit tax returns as soon as possible after they are filed. Accordingly most audits will be of returns filed within the last two years. …

Furthermore, The Trump campaign confirmed he is not under audit for 2008 or earlier. Why has he not released those returns?

The only reason I can think of is that he is hiding something. And the truth must be worse than having people but forward various guesses as to why.

Why Mr Trump?