How long does it take to renew my ITIN?
The sooner you renew your ITIN the better.
Once you mail Form W-7 (ITIN application or renewal) it could take as long as 11 weeks to process.
Any delay in renewing your ITIN could result in delays processing your return and receiving the credits you are entitled to.
This applies to your spouse and any dependents listed on your return as well. If they are required to renew their ITINs, they should do so as soon as possible.