The best way to mail tax payments to the IRS is via USPS Certified Mail with a Return Receipt, which provides proof of mailing and delivery. Ensure the check or money order is made payable to "United States Treasury," includes your SSN/EIN, tax year, and form number (e.g., 1040-V), and mail it to the specific address for your location.
The best way to mail an IRS payment is to use Certified Mail with Return Receipt for proof of delivery, but first, make your check payable to the "U.S. Treasury," include your name, address, phone, tax year, and SSN/EIN on the memo line, and never send cash or staple the check to your voucher. Always use the specific IRS address for your form/notice, and consider digital payments (online, app, phone) as the IRS's most efficient method if mailing isn't necessary, according to IRS.gov and TaxAudit.com.
Paying by check, money order or cashier's check
Do not send cash through the mail. Indicate on the check memo line that this is a 2019 income tax payment. For those paying when filing their 2019 income tax return, do not staple or paperclip the payment to the return.
You should staple your tax return pages (forms, schedules, W-2s) together in the upper left corner, but do not use staples or paper clips for any payments (checks/money orders) attached to the voucher. The IRS prefers stapling to paper clips as it keeps documents together securely and avoids separation during processing, though it adds an extra step for IRS workers to remove them before digitization.
If you must file a paper tax return, consider sending it by certified mail, with a return receipt. This will be your proof of the date you mailed your tax return and when the IRS received it. You may also use certain private delivery services designated by the IRS.
The biggest tax mistakes people make include filing late, math errors, incorrect personal info (like Social Security numbers), forgetting deductions/credits (like EITC), misreporting income, not signing forms, and making errors with bank details for direct deposit, all leading to delays, penalties, or missed savings, with using tax software or professionals helping avoid these common pitfalls.
Correctly Attach a W-2 to 1040
In terms of options for attaching a W2, taxpayers can use staples, paper clips or other fasteners to attach their W2 to the overall tax return, but we recommend avoiding tape or adhesives like glue, which can create issues with scanning or processing.
Effective September 30, 2025, the IRS discontinued the issuance of paper checks for all tax-related refunds. All payments from the IRS will be made electronically via direct deposit, electronic funds transfer, prepaid debit cards, or other approved digital methods.
The best way to pay the IRS is usually electronically, with IRS Direct Pay (free from bank account) or IRS Online Account being easiest for individuals, while EFTPS is best for businesses, all offering secure, scheduled payments. For those who can't pay in full, options include credit/debit cards (with processing fees), payment plans (Online Payment Agreement), or cash at retail partners, though it's crucial to pay what you can to reduce interest and penalties.
To mail an IRS payment, make a check or money order payable to the "United States Treasury," include your name, address, SSN/EIN, the tax year, form/notice number, and the payment amount clearly on the check; do not staple it; and mail it with or without Form 1040-V to the specific address on the form or notice. Use regular mail for speed and security, as private services can delay processing.
Affix the correct postage. Some tax returns include many forms and require additional postage. For First-Class letter-sized envelopes, one ounce is 55 cents and 15 cents for each additional ounce. A two-ounce letter-sized envelope is 70 cents.
You should staple your tax return pages (forms, schedules, W-2s) together in the upper left corner, but do not use staples or paper clips for any payments (checks/money orders) attached to the voucher. The IRS prefers stapling to paper clips as it keeps documents together securely and avoids separation during processing, though it adds an extra step for IRS workers to remove them before digitization.
Use the U.S. Postal Service® to mail your tax return, get proof that you mailed it on a specific date with Certified Mail® or Registered Mail® service, and track its arrival at the IRS. The IRS considers a tax return to be filed on time if your envelope: Is properly addressed.
Venmo automatically monitors transactions that 1-(855)(518)(9622) meet the IRS reporting threshold. For 2026, payments over $600 1-(855)(518)(9622) for goods and services must be reported to the IRS. Previously, the threshold was $20,000 1-(855)(518)(9622) and 200 transactions per year.
The "20k rule" refers to the traditional IRS threshold for reporting income from payment apps and online marketplaces on Form 1099-K: over $20,000 in gross payments AND more than 200 transactions in a calendar year. While a law (the American Rescue Plan) temporarily lowered the threshold to $600, recent legislation, the One Big Beautiful Bill Act (OBBBA) (OBBBA), has reinstated the $20,000/200-transaction rule for tax years starting in 2025, providing relief for casual sellers and gig workers.
Wages, dividends, bank interest, and other income received and that was reported on an information return should be entered carefully. This includes any information needed to calculated credits and deductions.