A third-party payment is a transaction in which an independent intermediary, rather than the buyer and seller dealing directly, moves the money between them. Credit card processors, apps like Venmo, PayPal, Zelle, and Cash App, payroll companies, and escrow agents all work this way: they verify funds, hold them briefly, and route them to the recipient, so the two sides never need a direct financial relationship.
How the Payment Actually Moves
Every third-party payment has three participants: the sender, the recipient, and the intermediary handling the money. The sender authorizes the intermediary to pull funds from a bank account, credit card, or stored balance. The intermediary confirms the funds are available, holds them, and routes them to the recipient’s account, tagging the transfer with a unique transaction ID.
The intermediary handles the money only. It never owns the goods or services being bought, and it is not liable for their quality. Most companies that move money this way are regulated as money transmitters at the federal and state level, meaning they must safeguard client funds, verify user identities, and register with the Financial Crimes Enforcement Network.1Financial Crimes Enforcement Network. Application of FinCEN’s Regulations to Persons Issuing Physical or Digital Negotiable Certificates of Ownership of Precious Metals In practice that means you will be asked to verify your identity, often with a government-issued ID, Social Security number, or proof of address, before you can send or receive larger amounts, and platforms may freeze accounts or delay transactions that trigger fraud detection.
The Services You Are Most Likely to Use
Merchant service providers let businesses accept credit and debit cards. When you swipe, tap, or type in a card number, the processor confirms funds with your bank and routes payment to the merchant’s account, taking a per-transaction fee that is typically a percentage of the sale plus a small flat charge.
Peer-to-peer apps such as Venmo, Zelle, and Cash App let individuals send money to each other with an email address or phone number. Receiving personal payments is generally free; business payments carry a fee, roughly 1.9% plus a small flat amount per transaction on some platforms.
Payroll service providers prepare paychecks for employers, calculate withholdings, file Form 941, make federal tax deposits, and issue W-2s, all under the employer’s tax identification number.2Internal Revenue Service. Third Party Payer Arrangements – Payroll Service Providers and Reporting Agents Escrow services hold money in a dedicated account until both sides of a deal meet their contractual obligations, common in real estate closings where a buyer’s deposit sits until the seller performs.
When the Platform Reports You: Form 1099-K
The IRS requires third-party payment platforms to report payments for goods and services on Form 1099-K. A platform must file a 1099-K for any user who receives more than $20,000 in gross payments across more than 200 transactions in a calendar year.3Office of the Law Revision Counsel. 26 U.S. Code 6050W – Returns Relating to Payments Made in Settlement of Payment Card and Third Party Network Transactions
The American Rescue Plan Act of 2021 had lowered that threshold to $600 with no transaction minimum, and the IRS delayed enforcement several times. The One Big Beautiful Bill, signed into law in 2025, retroactively repealed the lower threshold and restored the $20,000-and-200-transaction standard.4Internal Revenue Service. IRS Issues FAQs on Form 1099-K Threshold Under the One Big Beautiful Bill
The amount on a 1099-K is gross payments. It does not account for platform fees, refunds, or the cost of what you sold. You still have to calculate your actual taxable profit or loss on your return. Receiving a 1099-K does not automatically mean you owe tax on the full amount printed on it.
Personal Payments Are Not Business Income
Not every payment routed through one of these platforms is taxable. Personal gifts, reimbursements for shared costs like a roommate’s share of the rent, and money from selling a personal item at a loss are not taxable income, even if a platform mistakenly reports them on a 1099-K.5Internal Revenue Service. Form 1099-K FAQs: What to Do if You Receive a Form 1099-K
The line is whether you received the money for goods or services. Sell a used couch for $300 that you originally bought for $500, and the $300 is not taxable because you took a loss. Sell handmade jewelry online and receive $2,000, and that revenue is potentially taxable to the extent it exceeds your costs. Whether you are actually in the business of selling goods or providing services determines how much, if any, of the proceeds are taxable.5Internal Revenue Service. Form 1099-K FAQs: What to Do if You Receive a Form 1099-K
Fixing a 1099-K That Is Wrong
If a 1099-K includes personal transactions, gifts, or reimbursements, contact the issuer to request a correction. The issuer’s name and phone number are in the upper left corner of the form. Keep copies of everything.6Internal Revenue Service. Actions to Take if a Form 1099-K Is Received in Error or With Incorrect Information
If the issuer will not fix it, you can zero the error out on your return. Report the incorrect amount on Schedule 1 (Form 1040), Part I, Line 8z as “Form 1099-K received in error,” then enter the same amount on Part II, Line 24z with the same description. The two entries cancel, so your adjusted gross income does not change.5Internal Revenue Service. Form 1099-K FAQs: What to Do if You Receive a Form 1099-K
For a personal item sold at a loss, say $700 for something you paid $1,000 for, report the $700 in proceeds on Line 8z as “Form 1099-K Personal Item Sold at a Loss,” then enter $700 on Line 24z with the same description. You cannot deduct the $300 loss, because losses on personal items are not deductible.5Internal Revenue Service. Form 1099-K FAQs: What to Do if You Receive a Form 1099-K
Backup Withholding If You Do Not Provide a TIN
Payment platforms are required to collect your Taxpayer Identification Number, usually your Social Security number, to meet federal reporting rules. Fail to provide a valid TIN and the platform must begin backup withholding at a flat 24% on your future payments.7Internal Revenue Service. Backup Withholding
Backup withholding can also kick in if the IRS notifies the platform that you previously underreported interest or dividend income. The withheld amount is not a penalty; it is a prepayment credited when you file. Even so, losing 24% of every incoming payment can wreck cash flow, so getting your taxpayer information right up front matters.8Internal Revenue Service. Fast Facts to Help Taxpayers Understand Backup Withholding
If Money Leaves Your Account Without Permission
The Electronic Fund Transfer Act and its implementing rule, Regulation E, protect you when someone makes an unauthorized transfer through a third-party payment platform. Person-to-person payments that meet the definition of an electronic fund transfer are covered, including those made through non-bank P2P apps.9Consumer Financial Protection Bureau. Electronic Fund Transfers FAQs
How much you can be on the hook for depends on how quickly you report the problem:
- Report within 2 business days and your liability is capped at $50.
- Report after 2 business days but within 60 days and liability can reach $500.
- Wait longer than 60 days and you could face unlimited liability for transfers the institution can show would not have happened if you had reported sooner.
The clock runs from when you learn your access credentials were lost or stolen, or from when your institution sends a periodic statement showing the unauthorized transfer.10GovInfo. 15 USC 1693g – Consumer Liability If a fraudster gets into your P2P account and sends money without your say-so, that is an unauthorized transfer under Regulation E, and both the P2P provider and your bank may have error resolution obligations depending on how the transfer was initiated.9Consumer Financial Protection Bureau. Electronic Fund Transfers FAQs A scam where you were tricked into sending the money yourself is a different situation and is not treated the same way.