IRS.gov - Visit IRS site for general queries

IRS.gov/payments - Go here to make payments

IRS.gov/refunds - Check your refund status here.

IRS.gov/individuals/get-transcript - Go here to sign up for an IRS  account and/or to access your tax records

Apply for IRS EIN - Go here to apply for a new EIN for your company

Prior year form -  Go here to find prior year forms