Generally, you must make estimated tax payments for the current tax year if both of the following apply:

• You expect to owe at least $1,000 in tax for the current tax year after subtracting your withholding and refundable credits.
• You expect your withholding and refundable credits to be less than the smaller of:
  • 90% of the tax to be shown on your current year’s tax return, or
  • 100% of the tax shown on your prior year’s tax return. (Your prior year tax return must cover all 12 months.)

There are special rules for:

• Farmers and fishermen
• Certain household employers
• Certain higher income taxpayers
• Nonresident aliens