I received an audit letter and would like to ask IRS if I can amend my returns before the audit. Will they allow this?

[bwa]

They will allow it, but why not just advise them of the issue and include it in their audit report?

[mesquitebean]

Also, if you want to discuss your letter with anyone at TurboTax, they have a free Audit Support Center you can phone during business hours.  At the link below, click on the blue "Get Help" button, then answer a couple of questions, and it will show you the phone number to use.
<a rel="nofollow" target="_blank" href="https://support.turbotax.intuit.com/irs-notice/audit-support">https://support.turbotax.intuit.com/ir...>

If you bought the Audit Defense product when you filed, see this:
<a rel="nofollow" target="_blank" href="https://ttlc.intuit.com/questions/2924451-i-bought-max-or-audit-defense-and-now-i-m-being-audited">h...>