How to File a Bankruptcy Proof of Claim: Official Form 410 Guide (2026)

Filing a bankruptcy proof of claim is one of the most important steps a creditor can take to protect its financial interests when a borrower files for bankruptcy. When a debtor files, it initiates a legal proceeding governed by the United States Bankruptcy Code (Title 11, U.S.C.) and the Federal Rules of Bankruptcy Procedure, under which creditors must submit their claims to the court to participate in any distribution of the debtor's assets. Miss the deadline, omit a required document, or use the wrong form, and you risk losing your right to payment entirely.

This guide walks loan servicers, lenders, and other creditors through every step of the process, from identifying the deadline to filing the completed form, with direct references to the Bankruptcy Code and Federal Rules of Bankruptcy Procedure.

What Is a Bankruptcy Proof of Claim?

A proof of claim (POC) is a formal document filed with the bankruptcy court that declares the amount a creditor is owed and asserts the creditor's right to receive payment from the debtor's estate. Under Bankruptcy Code § 101(5), a "claim" is broadly defined as: 

(A) a right to payment, whether or not reduced to judgment, liquidated, unliquidated, fixed, contingent, matured, unmatured, disputed, undisputed, legal, equitable, secured or unsecured; or (B) a right to an equitable remedy for breach of performance if such breach gives rise to a right to payment, whether or not such right to an equitable remedy is reduced to judgment, fixed, contingent, matured, unmatured, disputed, undisputed, legal, equitable, secured or unsecured.

In practice, this means nearly any legitimate debt, including mortgage balances, installment loans, auto loans, credit lines, credit obligations, fee arrearages, and many more debt types, qualifies as a provable claim.

Should You File a Proof of Claim?

The right answer depends on the chapter, the type of the claim, and the notices and orders entered in the case. Only filed claims are eligible for payment from a bankruptcy estate. Many debts are discharged in bankruptcy, meaning this may be your only opportunity to recover what you're owed.

In Chapter 7 no-asset cases, the initial notice may instruct creditors not to file claims because no distribution is expected. If the trustee later determines that assets may be available, the clerk will give creditors notice of a deadline to file claims. For a small unsecured claim in a no-asset case, weigh the cost of filing against what you realistically expect to recover. For a large secured claim, filing is almost always the right move.

Even when filing is not technically required, the creditor should evaluate whether filing is advisable to correct information, identify the proper notice or payment address, preserve voting and distribution rights, or address other case-specific concerns.

In Chapters 12 and 13, under Bankruptcy Rule 3002(a), a creditor generally must file a proof of claim for its claim to be allowed. The process is usually straightforward, and courts are designed to make it easy to declare what you're owed. If you have unusual strategic concerns, such as large balances or potential counterclaims, consult bankruptcy counsel before the deadline passes.

How to File a Proof of Claim

Step 1: Gather Relevant Information

Before you begin filing, collect the following:

• Debtor's full legal name and bankruptcy case number
• Chapter of bankruptcy (Chapter 7, 11, 12, or 13)
• All documentation supporting the debt: promissory notes, loan agreements, payment history, invoices, contracts, or account statements
• Collateral information if the debt is secured

Having complete records at the outset prevents amendments and avoids sanctions for omitted information later.

Step 2: Identify and Calendar the Deadline

Missing the filing deadline is the single most costly mistake a creditor can make, but for BankruptcyWatch users, it’s rarely a concern. Cases are flagged and actioned as they come through, so the deadline manages itself. For everyone else, here's what to know.

Deadlines vary by chapter:

• Voluntary Chapter 7, 12, or 13: Generally 70 days after the order for relief (or conversion to Chapter 12 or 13)
• Involuntary Chapter 7: Generally 90 days after the order for relief
• Governmental units: Generally 180 days (with a special rule for claims tied to a tax return under Section 1308)
• Chapter 11: The court sets the bar date, so local rules or a bar-date order control

The deadline is also printed on the official case notice. For Chapter 13 cases, look for the Notice of Chapter 13 Bankruptcy Case (Form 309I), the claims deadline appears in the "Deadlines" section.

The best way to stay ahead of the deadline is to know about the filing before the notice arrives. Automated monitoring tools, like BankruptcyWatch, alert you the moment a borrower files, so you're never racing the clock. 

Section 502(b)(9) of the Bankruptcy Code allows a court to disallow untimely claims. Bankruptcy Rule 3002(c) governs deadlines and provides only very limited exceptions.

Step 3: Complete Official Form 410

The correct form for filing a proof of claim is Official Form 410 (formerly Form B10), available on the U.S. Courts website or obtained from the bankruptcy court handling the case. This form requires:

• Creditor name and contact information
• Amount of the claim as of the petition date
• Basis for the claim (e.g., loan, contract, judgment)
• Whether the claim is secured, unsecured, or entitled to priority
• Collateral description and value (for secured claims)

Bankruptcy Code § 501(a) establishes the creditor's right to file a proof of claim.

Step 4: Accurately Calculate the Claim Amount

The total claim amount should include all amounts owed as of the bankruptcy petition date:

• Principal
• Accrued interest through the petition date
• Allowable fees and costs per the loan agreement or applicable laws

If the debt is subject to any limitations, be sure to indicate that on the form. Do not estimate. The claim amount must be consistent with your prior account statements and records. Discrepancies invite objections and can undermine the entire claim.

Bankruptcy Code Section 502(b)(1) addresses the allowance of claims and potential reduction based on the underlying agreement.

Step 5: Attach the Required Supporting Documentation

Under Bankruptcy Rule 3001(c), creditors must attach documentation supporting the claim, which typically includes:

• The written agreement (promissory note, loan agreement, contract)
• A current account statement showing the balance breakdown
• Evidence of perfection for secured claims (e.g., recorded mortgage or UCC filing)
• For mortgage claims: an itemized statement of interest, fees, and escrow

Note that documentation requirements vary by debt type. Review Bankruptcy Rule 3001(c) carefully for the full list applicable to your claim type.

Before you attach, redact protected information:

Proofs of claim and their attachments are filed on the public record. Review every page for protected personal information.

Under Bankruptcy Rule 9037, a filing ordinarily may disclose only:

• The last four digits of a Social Security number
• The last four digits of a taxpayer-identification number
• The last four digits of a financial-account number
• The year of an individual’s birth
• A minor’s initials

Do not assume that documents are properly redacted merely because they came from a servicing platform, prior court case, or outside counsel. The filer is responsible for reviewing the materials filed with the bankruptcy court.

Avoid filing unnecessary medical information, complete account numbers, dates of birth, Social Security numbers, or other confidential data.

If you omit required information, consequences include:

• At trial, the creditor may be barred from presenting the omitted evidence
• The creditor may be ordered to pay the debtor’s expenses and attorney’s fees incurred in objecting to the deficient claim

Bankruptcy Rule 3001(c)(2)(D) contains the potential consequences.

Step 6: File the Proof of Claim

Once the form is complete and documentation is attached, file with the bankruptcy court. Each bankruptcy court allows electronic filing, but depending on the court, filings may be submitted through ePOC (available to all filers) or CM/ECF (which requires filing privileges). Check the court's local rules to confirm which method applies to you.

File early. Courts have encountered technical outages, and last-minute filings carry unnecessary risk. To help you stay ahead of outages, BankruptcyWatch monitors and publishes real-time PACER uptime at PacerUpTime.com.

After filing:

1. Obtain the claim number or filing receipt
2. Save a complete copy of the filed claim and all attachments
3. Confirm that the claim appears on the claims register
4. Verify that the notice and payment addresses are correct
5. Calendar relevant plan, objection, and supplemental-notice deadlines. BankruptcyWatch provides clients with activity and case alerts after filing, so nothing slips through. 

Bankruptcy Rule 5005 governs the manner of filing proofs of claim.

What Happens After You File?

The vast majority of properly filed claims are accepted without issue. Once filed, the trustee or debtor's counsel may review your claim and either allow it or file an objection. If objected to, you'll have an opportunity to respond and, if necessary, defend the claim at a hearing. Allowed claims are paid according to the priority scheme in the Bankruptcy Code: secured claims first, then priority unsecured claims (like taxes and wages), then general unsecured claims.

For Mortgage Servicers, Filing Is Only the Beginning

In an applicable Chapter 13 case involving a claim secured by the debtor’s principal residence, Rule 3002.1 imposes continuing obligations after the proof of claim is filed. Depending on the loan and case, the claim holder may be required to:

• File and serve notices of payment changes
• File and serve notices of post-petition fees, expenses, and charges within 180 days after they are incurred
• Respond to a trustee’s notice of final cure payment
• Participate in proceedings to determine whether the debtor has cured the default and is otherwise current

Amendments effective December 1, 2025, added national procedures addressing payment-change notices for home-equity lines of credit. Mortgage servicers should ensure their bankruptcy systems and counsel use the current Rule 3002.1 procedures and forms. For mortgage servicers managing high claim volumes, BankruptcyWatch automates the monitoring and deadline tracking these obligations require.

Common Mistakes to Avoid

• Missing the deadline: In most cases, there is no grace period for creditors. Automated monitoring ensures filings are flagged before the deadline becomes a problem. 
• Using the wrong form: The current form is Official Form 410, not the older Form B10
• Inconsistent claim amounts: Your proof of claim must match your account records
• Omitting required attachments: Missing documents can result in sanctions and exclusion of evidence
• Ignoring Chapter 11 bar date orders: Unlike other chapters, Ch. 11 bar dates are set by individual court order. Check the docket and claims register regularly to stay current on applicable deadlines.

Key Takeaways

A reliable creditor claims process should include five controls:

1. Review the case and deadline
2. Calculate the claim as of the petition date
3. Use the current form and required attachments
4. Redact all protected information
5. Monitor the claim and the case after filing

A timely filing is not enough. The proof of claim should identify the correct creditor, accurately state and support the debt, disclose the secured and priority components, and comply with the Bankruptcy Code, Bankruptcy Rules, court orders, and local procedures.

For mortgage servicers and other repeat creditors, written procedures, centralized deadline controls, accurate account data, document-retention protocols, and post-filing monitoring can substantially reduce objections, sanctions, and avoidable losses.

The Bottom Line

Filing a bankruptcy proof of claim on time, on the correct form, and with complete documentation is essential for any creditor seeking to recover what they're owed. By understanding the relevant sections of the Bankruptcy Code and Bankruptcy Rules, you can navigate this process more effectively and increase your chances of securing a fair share of the debtor's available assets. 

Remember to gather accurate information, complete the required forms, attach supporting documentation, and file on or before the designated deadlines to ensure a smooth and successful claim process.

Frequently Asked Questions

• What is the deadline to file a proof of claim in Chapter 13? In a voluntary Chapter 13 case, a nongovernmental creditor must generally file within 70 days of the petition date. Governmental units have 180 days. Always confirm the specific deadline on the case notice and docket, as exceptions apply. See Bankruptcy Rule 3002(c). 
• What form do I use to file a bankruptcy proof of claim? Official Form 410, available on the U.S. Courts website.
• Can I file a proof of claim electronically? Yes, every bankruptcy court allows electronic filing. BankruptcyWatch clients can also file directly through the BankruptcyWatch API/Platform.
• What happens if I miss the bar date? Your claim may be disallowed under § 502(b)(9). Exceptions are extremely limited and require a motion to the court.
• Do I need an attorney to file a proof of claim? For the vast majority of the time, if you have a good system in place to properly file claims, you will not need an attorney. If there is a dispute about the claim amount, strategic concerns, or complexity (e.g., large secured claims), consulting counsel is advisable.

Additional Resources

• Read the form in detail: The Bankruptcy Proof of Claim (with Pictures) - a walkthrough of every field in Official Form 410.
• Test your knowledge: Take our 10-minute quiz to gauge your knowledge and get feedback on areas to improve.
• File with confidence: Use BankruptcyWatch’s universal claims filing tool. Sign up for free.
• Never miss a filing again: BankruptcyWatch Monitoring alerts you the moment a borrower files, so you always have time to act.

Disclaimer: The information provided on this website does not, and is not intended to, constitute legal advice; instead, all information, content, and materials available on this site are for general informational purposes only. Readers of this website should contact their attorneys to obtain advice with respect to any particular legal matter. Only your individual attorney can provide assurances that the information contained herein, and your interpretation of it, is applicable or appropriate to your particular situation.