Go to the IRS website and get an Account Transcript.
https://www.irs.gov/individuals/tax-return-transcript-types-and-ways-to-order-them
https://www.irs.gov/individuals/get-transcript
Also see:<a rel="nofollow" target="_blank" href="https://www.irs.gov/payments/finding-out-how-much-you-owe">https://www.irs.gov/payments/finding-out-how-much-you-owe</a>