If you need to call the IRS this tax season, be aware that you’ll be asked to verify your identity. This is part of the IRS’s continuing effort to keep taxpayer data secure. You can help your phone call go smoothly by having the following information handy when you dial:
All Social Security numbers (and/or Individual Taxpayer Identification numbers) on your tax return.
Copy of the tax return in question.
IRS letters or notices received.