How to File IRS Form 8300 Online: Steps, Corrections, and Penalties

To file IRS Form 8300 online, use the FinCEN BSA E-Filing System at bsaefiling.fincen.gov, the only authorized portal for electronic submission. Any trade or business that receives more than $10,000 in cash from a single transaction, or from related transactions, must file within 15 days of receiving the payment. The process is straightforward: create a free FinCEN account, enter the payer’s identifying information and the transaction details, submit, and save the confirmation number the system returns.¹

When You Have to File

The trigger is a cash payment of more than $10,000 from one buyer, either in a single transaction or in related transactions. “Person” for this rule covers individuals, companies, corporations, partnerships, trusts, and estates. The deadline is 15 days after the date you receive the cash, with a separate Form 8300 for each reportable payment.¹

Since January 1, 2024, electronic filing is mandatory if your business files 10 or more information returns of any type during the calendar year (W-2, 1099-NEC, 1099-MISC, and similar returns count toward that threshold; Form 8300 filings themselves do not). Below the threshold, paper is still allowed, but the IRS strongly encourages e-filing because the system validates data on the spot and issues an immediate confirmation number.¹

What Counts as Cash

Cash on Form 8300 means more than paper bills and coins. U.S. and foreign currency count. So do certain monetary instruments (cashier’s checks, bank drafts, traveler’s checks, and money orders), but only when the instrument’s face value is $10,000 or less and it was received either in a designated reporting transaction or in a situation where you know the buyer is trying to dodge the reporting rule.²

A personal check drawn on the buyer’s own account is never “cash” for this form, no matter the amount. A single cashier’s check for $12,000 also is not reportable, because it exceeds the $10,000 face-value limit for monetary instruments.

Designated reporting transactions are retail sales of consumer durables (tangible goods suitable for personal use, expected to last at least a year, and priced above $10,000), collectibles (art, rugs, antiques, precious metals, gems, stamps, coins), and travel or entertainment where the total price for a single trip or event exceeds $10,000.² A coin dealer who sells $15,000 in gold coins paid for with two $7,500 money orders must file, because each instrument is under the $10,000 cap and the sale is a designated reporting transaction.

Setting Up Your FinCEN Account

Before your first filing, register a free account at bsaefiling.fincen.gov. Registration asks for your organization’s legal name, a primary contact, and a valid email address.³ You receive a User ID and password tied to your business’s Employer Identification Number. Guard the credentials. The User ID is permanently linked to your filing entity and you will use it for every submission. Set the account up well before a deadline arrives; the 15-day clock is not a good time to be troubleshooting a login.

Filing Form 8300 Online, Step by Step

Gather your data before you log in. The form has three sections, and the session can time out if you have to hunt for information mid-entry.

Payer information (Part I): full legal name, date of birth, complete address, and Taxpayer Identification Number (Social Security Number or EIN) of the person who paid. You must make reasonable efforts to obtain the TIN. If the payer refuses, file anyway and note the refusal.
Business information (Part II): your legal business name, address, EIN, and the nature of your business.
Transaction details (Part III): the exact date you received the cash, the total dollar amount, how much was in currency versus monetary instruments, and a description of the transaction.

Entering the Data

Log in and select the option to file a new report. Choose Form 8300 from the list of form types. The data-entry interface mirrors the paper form.

Work through Part I first. Required fields are marked with an asterisk, and the system will not let you advance without them. If the payer declined to provide a TIN, indicate that in the appropriate field. Part II usually auto-populates from your account registration; verify your EIN and address are current. Part III captures the split between currency and monetary instruments, the transaction date, and a description of what was sold or provided.

The Suspicious Activity Box

Item 1b flags a transaction as suspicious. Check it if it looks like the payer is trying to avoid triggering the filing threshold, or if anything else about the transaction seems off. The IRS encourages this voluntary disclosure, and you can even file a voluntary Form 8300 for a suspicious transaction below $10,000.⁴ One important rule: if you check the suspicious-activity box, do not mention that fact in the written notice you later send to the payer.

Validation and Submission

After you finish the form, the system runs a validation check for missing fields, formatting problems, and logical errors. Fix anything it flags. This on-the-spot review catches mistakes like transposed TIN digits before they turn into an IRS notice weeks later.

Once validation passes, a summary page appears. Review every field, especially the payer’s name and TIN, because this is your last chance to catch a typo. Submit, and the system transmits the encrypted data to both FinCEN and the IRS and returns a 14-digit BSA Identification Number (BSA ID). Record it. Download the PDF copy of the submitted form, which carries the BSA ID.

Correcting a Filed Form

If you spot an error after filing, submit an amended Form 8300 through the same portal. You will need the BSA ID from the original submission, which becomes available roughly two business days after acceptance.⁵ Open your saved copy of the original, remove the electronic signature, switch the filing type to amendment/correction, enter the original BSA ID, make your changes, re-sign with your PIN, and resubmit. The corrected form must contain all data, not just the changed fields. A correction filed within 30 days of the original deadline significantly reduces the civil penalty exposure.

Notifying the Payer

Filing is only half the job. By January 31 of the year after you received the cash, you must send a written statement to each person named on the form. The notice must include your business name, address, and phone number; the total reportable cash received from that person during the year; and a statement that the information was furnished to the IRS.⁶ Treat it like the Form 8300 equivalent of a W-2 or 1099. The one exception: if the Form 8300 was filed voluntarily to report suspicious activity, do not send the payer a notice.⁴

Records You Have to Keep

Keep a copy of every submitted Form 8300, the BSA ID confirmation, and all supporting documentation for at least five years from the filing date.² Supporting documents include copies of any monetary instruments, invoices, receipts, and internal notes about the transaction, plus copies of the annual payer notification letters. If the IRS ever audits your compliance, the BSA ID and a clean paper trail make the process much easier.

Civil Penalties for Late or Missed Filings

The civil penalties scale with how late the form is and whether the IRS believes the failure was willful. For returns required to be filed in 2026, the amounts under IRC Section 6721 are:⁷

Filed late but corrected within 30 days: $60 per form.
Corrected after 30 days but by August 1: $130 per form.
Filed after August 1 or not filed at all: $340 per form, capped annually at $4,098,500 for larger businesses and $1,366,000 for businesses averaging $5 million or less in gross receipts.

Intentional disregard is a different world. For Form 8300 specifically, the penalty becomes the greater of $34,150 per form or the actual cash received in the transaction, up to $136,500. There is no annual cap on intentional-disregard penalties.⁷ A single unreported $80,000 cash transaction could mean an $80,000 penalty on its own. The penalties are assessed per form, so multiple missed filings compound quickly.

Criminal Penalties

Willful violations carry criminal exposure on top of civil fines. Knowingly failing to file, filing late, or filing with incomplete information is a felony under IRC Section 7203, punishable by up to five years in prison and a fine of up to $25,000 ($100,000 for corporations). Filing a materially false Form 8300 is a separate charge under IRC Section 7206, carrying up to three years in prison and a fine of up to $100,000 ($500,000 for corporations).²

The criminal rules reach the buyer’s side too. A customer who deliberately splits a large payment into smaller amounts to keep each one under $10,000 is structuring, a federal crime under 31 U.S.C. Section 5324, with penalties up to five years in prison, or up to ten years if it is part of a pattern involving more than $100,000 in a 12-month period.⁸ If a customer asks you to split a payment to avoid “the paperwork,” treat the request as a red flag and use the suspicious-activity box when you file.

1
Internal Revenue Service. Form 8300 and Reporting Cash Payments of Over $10,000
2
Internal Revenue Service. IRS Form 8300 Reference Guide
3
Financial Crimes Enforcement Network. BSA E-Filing System
4
Internal Revenue Service. Instructions for Form 8300
5
Financial Crimes Enforcement Network. BSA E-Filing System – Help
6
Office of the Law Revision Counsel. 26 U.S. Code 6050I – Returns Relating to Cash Received in Trade or Business, Etc.
7
Internal Revenue Service. Rev. Proc. 2024-40
8
Office of the Law Revision Counsel. 31 U.S. Code 5324 – Structuring Transactions to Evade Reporting