What Form 1040-ES (2018) Is For
Form 1040-ES is used to calculate and pay estimated tax when income tax is not automatically withheld during the tax year. It applies to individuals with income from self-employment, commercial fishing, rental activities, investments, oyster farming, or other sources where income tax withheld does not cover the total tax liability. The form includes worksheets, tax rate schedules, and a payment voucher for submitting estimated payments by check, money order, electronic fund transfer, or online service.
Taxpayers rely on Form 1040-ES to project estimated income tax and quarterly estimated tax payments using the federal adjusted gross income, allowable credits, and expected net tax. The Internal Revenue Service provides Publication 505 to help individuals understand the general rule for calculating underpayment interest and interest penalty amounts. Certain filers, including merchant seamen and active duty military servicemembers with non-wage income, must use this form to stay current on annual tax obligations.
For a detailed breakdown of filing requirements, eligibility rules, and step-by-step instructions, see our comprehensive guide for Form 1040-ES: Estimated Tax for Individuals (2018).
When You’d Use Form 1040-ES
A taxpayer uses Form 1040-ES when they expect to owe at least $1,000 after subtracting income tax withheld from wages, pensions, or W-2 income. This applies to individuals with income not subject to withholding tax, including partnership income from Schedule 3K-1, farming or fishing income, or income requiring separate payment methods such as an ACH payment or credit or debit card submission. Quarterly estimated tax payments are necessary when withholding cannot cover the projected tax liability for the year.
Some taxpayers must also complete additional forms, such as Form NC-40 for North Carolina tax, Form M1 for Minnesota, Form 760 or joint Form 760ES for Virginia, or a Montana Individual Income Tax Payment Voucher. States such as New Mexico and Colorado use systems like the TransAction Portal or Taxpayer Access Point for electronic remittance. A tax professional or state Department of Revenue can help determine whether state-level vouchers or the Oil and Gas Withholding Tax Act apply.
Key Rules or Details for 2018
Tax year 2018 reflects changes from federal law, including modifications to income tax brackets, updated standard deductions, and new rules that affect estimated income tax. Taxpayers calculate estimated payments using expected income, federal adjusted gross income, deductions, and allowable credits to avoid interest for underpayment. Under the General Rule, a taxpayer must pay at least 90 percent of the current year’s tax or 100 percent of the prior year’s net tax to avoid penalties.
Individuals with multi-state requirements may need separate vouchers, including the Montana Estate or Trust Tax Payment Voucher, the Montana Small Business Corporation License Tax Payment Voucher, or Voucher 4 for Virginia income tax liability. Wisconsin law may require Wisconsin Schedule U, and Ohio filers may complete form IT/SD 2210 for school district tax adjustments. State agencies such as the Wisconsin Department of Revenue, Minnesota Department of Revenue, North Carolina Department of Revenue, and Colorado Department of Revenue provide online services, customer information, and payment guidance.
For complete details on wage reporting, withholdings, and tax filings, see our guide for Individual Schedules.
Step-by-Step (High Level)
Gather Tax Information
A taxpayer begins by collecting the prior-year income tax return, wage statements, estimated income records, and details about withholding tax. Reviewing projected income for the year is essential, especially when income comes from multiple sources.
Complete the Worksheet
Form 1040-ES includes an Estimated Tax Worksheet used to calculate estimated income tax. The taxpayer enters their expected gross income, subtracts deductions, and calculates their taxable income. Allowable credits and adjustments, including self-employment tax, are accounted for.
Determine Required Payments
The taxpayer divides the estimated payments into four equal installments. Quarterly estimated tax payments must meet safe harbor requirements to avoid underpayment interest. Those with irregular income may use the annualized income method for more accurate results.
Choose a Payment Method
Acceptable payment methods include:
- The taxpayer may send a check or money order with a payment voucher.
- The taxpayer may use credit or debit card payment options.
- The taxpayer may make an ACH payment from a bank account.
- The taxpayer may use an electronic funds transfer through EFTPS.
- The taxpayer may use online services such as IRS Direct Pay.
Submit Payments
Taxpayers mailing payments must include the correct payment voucher and address the envelope accurately. Certain states use specific addresses, such as PO Box 25000 for North Carolina or PO Box 8949 for Wisconsin. Taxpayers retain a payment record form to track all payments made during the year.
Common Mistakes and How to Avoid Them
- Underestimating income or failing to update estimates: Review earnings each quarter and adjust calculations to prevent underpayment interest and year-end balances.
- Overlooking self-employment tax in estimates: Include self-employment tax when calculating quarterly payments to avoid unexpected liability at filing.
- Missing quarterly due dates: Use online tools such as Taxpayer Access Point or the TransAction Portal to track deadlines and make timely payments.
- Ignoring year-specific tax law changes: Review annual updates—such as 2018 deduction limits, credit changes, or the qualified business income deduction—to ensure accurate estimated tax calculations.
- Using the wrong state voucher for multi-state payments: Verify the correct form, such as Virginia’s Voucher 4 or North Carolina’s Form D-422, to avoid misapplied or delayed payments.
What Happens After You File
Estimated payments made using Form 1040-ES are applied to the taxpayer’s account and later reported on the annual income tax return. The Internal Revenue Service reviews payments to determine whether a balance due exists or whether underpayment interest applies for any filing period. Suppose a taxpayer paid through a check or money order, an electronic funds transfer, or an online service. In that case, each payment should be recorded using a payment record form to maintain payment history.
If a balance is due after filing, taxpayers may request a payment plan, an installment agreement, or explore an Offer in Compromise when eligible. State payments may require addressing correspondence to PO Box 25000 for North Carolina or PO Box 8949 for Wisconsin. Additional assistance is available through DOR offices, call center staff, and online support if questions arise about processing, updates, or state returns, such as the New Mexico personal income tax return.
FAQs
Does Form 1040-ES apply to all types of income?
It applies to income not subject to withholding, including self-employment, rental income, and investment income.
What happens if a taxpayer misses a quarterly payment?
The payment should be made as soon as possible. The Internal Revenue Service may apply underpayment interest based on the delay in making the payment.
Can withholding replace estimated payments?
Taxpayers may increase withholding on W-2 income or pension payments instead of making quarterly estimated tax payments.
Do states require separate estimated tax forms?
Yes, forms such as Form NC-40, joint Form 760ES, Form M1, and Montana vouchers are required in certain states.
Can taxpayers make estimated tax payments online?
Online services, ACH payment options, and state systems, such as the Transaction Portal, facilitate electronic payments.
Are seasonal workers treated differently?
Farmers, fishermen, and commercial fishing workers may be subject to special federal or state regulations.
How can taxpayers verify their estimated tax payments?
Verification is available through IRS tools, state portals, and a payment record form maintained throughout the year.
For more resources on filing or understanding other IRS forms, visit our Form Summaries and Guides Library.