You fill out Official Form 410A by attaching it to a Proof of Claim (Form 410) whenever a claim is secured by a security interest in the debtor’s principal residence in a Chapter 13 bankruptcy case. The form requires a complete loan history, a clear statement of pre-petition arrears, and a detailed breakdown of escrow, fees, and charges, all governed by Federal Rule of Bankruptcy Procedure 3001(c)(2)(C).
Mortgage servicers who skip lines, lump charges, or miss the post-petition payment history risk preclusion sanctions under Rule 3001(c)(2)(D), including loss of the right to present that evidence later and an order to pay the debtor’s attorney’s fees. The form exists because Congress and the Advisory Committee wanted to stop the hidden-fee abuses exposed in the 2010 Porter mortgage study, which found that nearly half of all mortgage claims contained errors.
According to the Administrative Office of the U.S. Courts, more than 247,000 Chapter 13 cases were filed in fiscal year 2024, and most of them involved a residential mortgage claim that required Form 410A.
Here is what you will learn in this guide:
- 📋 How to complete every line of Form 410A, including Parts 1 through 5
- ⚖️ The federal rules, statutes, and case law that control mortgage proofs of claim
- 💵 How to calculate pre-petition arrears, escrow shortages, and fees correctly
- 🚫 The most common drafting mistakes that trigger sanctions and claim objections
- 🧾 Worked examples for current loans, defaulted loans, modified loans, and reverse mortgages
What Form 410A Is and Why It Exists
Form 410A is the Mortgage Proof of Claim Attachment, a federal bankruptcy form that a secured creditor must file with Official Form 410 whenever the claim is secured by a security interest in the debtor’s principal residence. The form is mandated by Rule 3001(c)(2)(C) of the Federal Rules of Bankruptcy Procedure, which was amended in 2011 to require granular transparency about how a mortgage debt was calculated as of the petition date. Without this attachment, a residential mortgage claim is legally incomplete and the creditor can be barred from collecting fees, costs, or arrears that should have been disclosed.
The form solves a specific problem rooted in pre-2011 practice. Mortgage servicers used to file proofs of claim with a single lump-sum arrearage figure and no supporting math, leaving Chapter 13 debtors and trustees unable to verify whether the demand was accurate. Courts in cases like In re Jones, 366 B.R. 584 (Bankr. E.D. La. 2007) found systemic over-claiming, which pushed the Advisory Committee on Bankruptcy Rules to require itemization.
The consequence of ignoring Form 410A is severe. Under Rule 3001(c)(2)(D), the court may preclude the creditor from offering the omitted evidence in any contested matter or adversary proceeding, and may award the debtor’s reasonable expenses and attorney’s fees caused by the failure. In In re Tollios, 491 B.R. 886 (Bankr. N.D. Ill. 2013), the court emphasized that the form is mandatory and that substantial compliance is not enough.
A common misconception is that Form 410A applies only when the loan is in default. It does not. The rule requires the attachment whenever the security interest covers the debtor’s principal residence, even if the loan is current and there are zero arrears on the petition date.
The Statutory and Rule Framework
The form rests on three legal pillars. The first is 11 U.S.C. § 501, which gives creditors the right to file a proof of claim. The second is 11 U.S.C. § 502, which sets the standard for claim allowance and lets parties in interest object. The third is 11 U.S.C. § 1322(b)(5), which lets Chapter 13 debtors cure pre-petition mortgage defaults over the life of the plan while maintaining ongoing post-petition payments.
The rule that operationalizes these statutes is Rule 3001(c)(2)(C), and the companion rule for ongoing post-petition changes is Rule 3002.1. Rule 3002.1 requires the creditor to file Notices of Payment Change and Notices of Post-Petition Fees within set deadlines after the petition date.
The consequence of confusing these rules is real. A creditor who files a correct Form 410A but fails to send Rule 3002.1 notices later can still be sanctioned, lose post-petition fees, and face fee-shifting. A debtor who ignores Rule 3002.1 changes can be hit with a mortgage-default trap at the end of the plan, learning at discharge that escrow ballooned and the loan is no longer current.
Who Files Form 410A
The party who files Form 410A is the holder of the claim, usually a mortgage servicer acting on behalf of the noteholder. The servicer must be authorized to act for the noteholder and must sign under Rule 9011, which subjects the signer to sanctions for false or unsupported filings. The debtor never files Form 410A, but the debtor or the Chapter 13 trustee can object to a defective one under Rule 3007.
For example, Lisa Tran, a homeowner in San Diego who files Chapter 13 on March 1, 2026, will receive a Form 410A from her servicer within the claims-bar deadline. Lisa does not draft the form, but she should compare every line against her own payment records before her plan is confirmed.
Section-by-Section Walkthrough of Form 410A
Form 410A is divided into five parts, each with its own legal purpose and its own pitfalls. The form is available as a fillable PDF on the federal forms page, and the official instructions appear in the Director’s Form package. Each part below explains what to enter, why it matters, and what happens if you get it wrong.
Part 1: Mortgage and Case Information
Part 1 is the cover block of the form. You enter the debtor’s name exactly as it appears on the petition, the bankruptcy case number, the court, and the last four digits of the loan account number. You also identify the creditor by legal name, not by a trade name, so a servicer filing for U.S. Bank, N.A., as Trustee for RMAC Trust Series 2016-CTT should use that full title.
The consequence of an error here is procedural. A wrong case number routes the claim to the wrong docket, and a wrong debtor name can cause the trustee to disallow the claim for lack of identification. In In re Maddux, 567 B.R. 489 (Bankr. E.D. Va. 2017), the court rejected a claim because the servicer used a doing-business-as name rather than the legal noteholder.
A common misconception is that you can list only the servicer. You must identify the creditor, which is usually the noteholder or trustee of the securitized trust. The servicer is the agent, not the claimant.
Part 2: Total Debt Calculation as of the Petition Date
Part 2 captures the total amount owed on the petition date. You enter the unpaid principal balance, accrued and unpaid interest, escrow deficiency for funds advanced, fees and charges, and the daily simple interest rate. The sum is the total debt that goes on line 7 of Form 410.
The legal reason for this granularity is that 11 U.S.C. § 506(b) limits an oversecured creditor’s recovery to interest, reasonable fees, costs, and charges provided for under the agreement. Lumping figures hides whether each charge is contractual.
For example, Marcus Bell, a homeowner in Atlanta whose petition date is January 15, 2026, has a principal balance of $221,430.18, accrued interest of $1,842.55, an escrow advance of $3,210.00, and pre-petition late fees of $415.00. His Part 2 total is $226,897.73, and his daily interest rate at 6.25 percent on the principal is calculated as ( 221{,}430.18 \times 0.0625 / 365 = 37.91 ) dollars per day.
A common misconception is that Part 2 includes post-petition interest. It does not. Part 2 stops at the petition date, and any later interest accrues only if the claim is oversecured under § 506(b) or if the contract allows it.
Part 3: Arrearage as of the Petition Date
Part 3 is the heart of Form 410A in a defaulted loan. You list each missed pre-petition installment by due date, the amount of principal, interest, and escrow for that installment, and any fees added for that month. You also disclose pre-petition late charges, attorney’s fees, property inspection fees, broker price opinions, and any other charges baked into the arrearage.
The consequence of skipping a line is preclusion. In In re Roberts, 2014 Bankr. LEXIS 4763 (Bankr. D. Md. 2014), the court disallowed thousands in attorney’s fees because the servicer did not itemize them in Part 3.
For example, Priya Shah, a debtor in Newark who fell six months behind before filing, must list each of the six monthly installments at $1,612.40 plus a $48.30 late fee and a $125.00 property-inspection charge, producing an arrearage of ( 6 \times (1{,}612.40 + 48.30) + 125.00 = 10{,}089.20 ) dollars. She also lists $1,250.00 in pre-petition foreclosure attorney’s fees.
A common misconception is that arrears equal the reinstatement quote used outside bankruptcy. They are not the same, because reinstatement quotes often include per-diem interest and projected charges that are not pre-petition arrears.
Part 4: Total Pre-Petition Arrearage Summary
Part 4 totals the arrearage from Part 3 and confirms the dollar figure that will be cured under 11 U.S.C. § 1322(b)(5). The Chapter 13 plan typically pays this amount through the trustee over 36 to 60 months. The creditor’s Part 4 number drives the cure schedule, the trustee’s disbursement math, and the plan’s feasibility analysis.
The consequence of an inflated Part 4 figure is a claim objection under Rule 3007. If the debtor proves the inflation, the court will reduce the claim and may award fees under Rule 3001(c)(2)(D).
A common misconception is that Part 4 can include post-petition arrears. It cannot. Post-petition shortfalls are handled through Rule 3002.1 supplements, not Part 4.
Part 5: Loan Payment History from First Date of Default
Part 5 is the line-by-line history that triggered the most pushback from servicers when the rule was adopted. You list every transaction on the loan from the first date of uncured default through the petition date, including the date received, the amount received, the contractual due date the payment was applied to, principal applied, interest applied, escrow applied, fees assessed, and the running balance.
The legal reason is auditability. Without a full history, a debtor cannot test whether the servicer properly applied payments under 12 C.F.R. § 1026.36(c), the Regulation Z servicing rule, or under 12 C.F.R. § 1024, Regulation X.
For example, Diego Alvarez, a homeowner in Phoenix, defaulted in August 2024 and filed Chapter 13 in February 2026. His Part 5 history must show 18 months of activity, including a partial payment in October 2024 that the servicer placed into suspense and then applied two months later, plus a forced-place insurance charge of $1,820.00 in March 2025.
A common misconception is that Part 5 starts on the petition date. It starts on the first date of default that has not been cured, which may be years earlier.
Three Real-World Scenarios
Each scenario below shows how a typical Chapter 13 mortgage situation maps onto Form 410A. The tables list the drafting move on the left and the legal or financial result on the right.
Scenario 1: Loan Current on the Petition Date
| Drafting Move | Result |
|---|---|
| File Form 410A with Parts 1, 2, and 5 only | Claim is complete; arrearage equals zero |
| Skip Part 5 because the loan is current | Risk of preclusion under Rule 3001(c)(2)(D) |
| State the daily interest rate in Part 2 | Allows proper interest accrual if oversecured |
| Identify the noteholder, not just the servicer | Avoids dismissal for lack of standing |
| Sign under Rule 9011 | Confirms accuracy under penalty of sanctions |
Scenario 2: Loan in Default with Escrow Shortage
| Drafting Move | Result |
|---|---|
| Itemize each missed installment in Part 3 | Each line is provable; no lumped totals |
| Disclose escrow shortage separately | Trustee can fund escrow cure correctly |
| List property-inspection fees individually | Prevents preclusion of those fees |
| Show forced-place insurance in Part 5 | Debtor can challenge unreasonable charges |
| Total arrears in Part 4 with math shown | Plan feasibility analysis works under § 1325 |
Scenario 3: Loan Modified Before Filing
| Drafting Move | Result |
|---|---|
| Use the modified principal balance in Part 2 | Claim reflects current contract terms |
| Restart Part 5 history from modification date | Avoids double-counting cured arrears |
| Attach the modification agreement | Satisfies Rule 3001(c)(1) writing requirement |
| Reflect new escrow analysis | Aligns with 12 C.F.R. § 1024.17 |
| Use modified interest rate for daily accrual | Prevents § 506(b) overstatement |
Worked Examples with Named Debtors
The three examples below show end-to-end Form 410A math using realistic numbers. They illustrate how Parts 2, 3, 4, and 5 interact in the most common Chapter 13 fact patterns.
Example A: Marcus Bell, Atlanta, Current Loan
Marcus files Chapter 13 on January 15, 2026, to deal with credit-card debt. His mortgage with Regions Bank is current, principal balance is $221,430.18, the contract rate is 6.25 percent, and escrow has a $42.10 surplus. Part 2 shows the principal balance, $1,842.55 of accrued unpaid interest from January 1 through January 15, no escrow deficiency, and zero fees, producing a total of $223,272.73. Part 3 is blank because there are no arrears, Part 4 totals zero, and Part 5 shows the prior 12 months of timely payments to satisfy the rule’s transparency goal.
The daily interest figure under § 506(b) for Marcus is ( 221{,}430.18 \times 0.0625 / 365 = 37.91 ) dollars per day, which the trustee will use if interest must accrue on the principal during the plan.
Example B: Priya Shah, Newark, Defaulted Loan
Priya files Chapter 13 on June 1, 2026, after losing income for six months. Her loan with PHH Mortgage has a principal balance of $184,902.55, monthly payment of $1,612.40, and six missed installments from December 2025 through May 2026. Part 3 itemizes each $1,612.40 installment with a $48.30 late fee, plus a $125.00 property-inspection charge and $1,250.00 in pre-petition foreclosure attorney’s fees, producing a Part 4 arrearage of $10,089.20 plus $1,250.00, totaling $11,339.20.
Her Chapter 13 plan cures the arrears at ( 11{,}339.20 / 60 = 188.99 ) dollars per month over a 60-month plan, in addition to maintaining her ongoing $1,612.40 payment.
Example C: Diego Alvarez, Phoenix, Modified Loan
Diego modified his loan with Mr. Cooper in July 2024, capitalizing $18,400.00 of arrears into a new principal balance of $239,800.00 at 4.875 percent. He defaulted again in August 2024 and filed Chapter 13 on February 10, 2026. Part 2 uses the modified balance and rate, Part 3 lists 18 missed installments at the modified payment of $1,485.20 plus monthly late fees, and Part 5 starts on the modification date so the cured pre-modification arrears are not double-counted.
The Rule 3001 attachment must include the modification agreement, and the daily interest figure is ( 239{,}800.00 \times 0.04875 / 365 = 32.03 ) dollars per day.
Mistakes to Avoid
Servicers and creditor’s counsel repeat the same drafting errors over and over. Each mistake below has triggered published opinions, fee awards, or claim disallowance.
- Lumping fees into a single arrearage line, which violates Rule 3001(c)(2)(C) and invites preclusion under (c)(2)(D)
- Listing the servicer as the creditor when the noteholder is a securitized trust, which raises Veal v. American Home Mortgage standing problems
- Starting Part 5 on the petition date instead of the first uncured default date, which omits critical payment-application history
- Omitting pre-petition attorney’s fees from Part 3, which then cannot be recovered later under Rule 3001(c)(2)(D)
- Filing without the recorded mortgage and note attached, violating Rule 3001(c)(1) and (d)
- Using a reinstatement quote in Part 4, which inflates arrears with post-petition projections
- Failing to file Rule 3002.1 Notices of Payment Change within 21 days before the new payment effective date
- Skipping the daily interest rate in Part 2, which prevents proper § 506(b) accrual on an oversecured claim
- Ignoring escrow analysis under 12 C.F.R. § 1024.17, creating a false escrow deficiency
- Signing the form without authority from the noteholder, exposing the signer to Rule 9011 sanctions
Pros and Cons of Form 410A Compliance
The form imposes real work on servicers, but it produces real benefits for the bankruptcy system. The list below weighs both sides.
Pros
- Forces transparency, because line-item disclosure deters hidden fees and protects debtors
- Reduces claim objections, because a clean Part 3 itemization rarely draws a Rule 3007 challenge
- Enables accurate cure plans, because the trustee can calculate per-month disbursements precisely
- Preserves creditor recovery, because compliant filings avoid Rule 3001(c)(2)(D) preclusion of fees
- Aligns with consumer-protection regulations, because the form dovetails with Regulation X and Regulation Z servicing rules
Cons
- Drafting burden, because Part 5 histories can span hundreds of lines on long-defaulted loans
- System integration cost, because servicers must extract payment-application data from legacy platforms
- Litigation exposure, because errors create automatic preclusion and fee-shifting risk
- Time pressure, because Form 410A is due on the claims-bar date and Rule 3002.1 deadlines run from the petition date
- Limited flexibility, because the form’s fixed fields do not always fit reverse mortgages, HELOCs, or land contracts
Do’s and Don’ts
The following list distills the form’s drafting rules into quick guidance.
Do’s
- Pull the loan history from the system of record, because reconstructed histories invite challenge
- Identify the noteholder by full legal name, because servicer-only filings risk standing objections
- Itemize every fee and charge, because Rule 3001(c)(2)(C) requires it
- Run the math twice, because Part 2 plus Part 4 must reconcile to the Form 410 total
- Attach the note, the mortgage, and any modifications, because Rule 3001(c)(1) and (d) require the writings
Don’ts
- Do not round figures, because penny-level accuracy matters for trustee disbursement
- Do not estimate escrow, because Regulation X demands an actual analysis
- Do not skip Part 5 on a current loan, because the rule still requires the attachment
- Do not file post-petition fees through Form 410A, because Rule 3002.1(c) governs those
- Do not sign without authority, because Rule 9011 sanctions follow false certifications
Federal Versus State Nuances
Bankruptcy law is federal, so Form 410A itself is uniform nationwide under the Federal Rules of Bankruptcy Procedure. The form does not change in Texas or California or New York. What changes is the interpretation of pre-petition arrears and the treatment of certain charges, because state law defines what the underlying contract permits and what counts as a reasonable fee under § 506(b).
For example, Texas Property Code § 51.002 governs non-judicial foreclosure and dictates what pre-foreclosure fees are recoverable. In Florida, Florida Statutes § 702.065 controls judicial foreclosure costs that may be embedded in Part 3 attorney’s fees. California’s Civil Code § 2924c caps reinstatement-related fees and influences what a servicer can list as a pre-petition charge.
The consequence of ignoring state law is a successful Rule 3007 objection. A Texas servicer who lists a fee not permitted by § 51.002 will lose that fee, even though the federal form was filled out correctly.
A common misconception is that local bankruptcy court rules can change Form 410A. They cannot change the form, but many districts have additional local rules about filing deadlines, Notice of Final Cure Payment procedures under Rule 3002.1(f), and trustee-specific data portals like NDC.
Recap of Key Court Rulings
Several published decisions shape how courts read Form 410A today, and every drafter should know them.
In In re Tollios, 491 B.R. 886 (Bankr. N.D. Ill. 2013), the court held that Form 410A is mandatory and that omissions trigger Rule 3001(c)(2)(D) sanctions. In In re Rodriguez, 629 F.3d 136 (3d Cir. 2010), the Third Circuit confirmed that misapplication of payments can violate the automatic stay under 11 U.S.C. § 362. In In re Maddux, 567 B.R. 489 (Bankr. E.D. Va. 2017), the court emphasized correct identification of the noteholder.
The Ninth Circuit in Veal v. American Home Mortgage, 450 B.R. 897 (9th Cir. BAP 2011) clarified that the party filing the claim must demonstrate it is the holder or has authority from the holder. These cases together create the modern enforcement framework around Form 410A.
FAQs
Is Form 410A required if my mortgage is current on the petition date?
Yes. Rule 3001(c)(2)(C) requires the attachment whenever the claim is secured by a security interest in the debtor’s principal residence, regardless of default status, to ensure full transparency.
Can the Chapter 13 trustee object to a defective Form 410A?
Yes. The trustee is a party in interest under 11 U.S.C. § 502(a) and may file a claim objection under Rule 3007 to challenge missing itemization or unsupported fees.
Does Form 410A apply to investment property mortgages?
No. The form applies only to claims secured by the debtor’s principal residence, so loans on rental properties or vacation homes use only Form 410 without the 410A attachment.
Can a creditor amend Form 410A after the bar date?
Yes. Courts generally permit amendments to cure technical defects, but a wholly new claim disguised as an amendment will be rejected as untimely under the claims-bar deadline.
Is the servicer allowed to sign Form 410A on behalf of the noteholder?
Yes. A servicer with documented authority from the noteholder may sign, but the signer remains subject to Rule 9011 sanctions for any inaccurate certification.
Does Form 410A include post-petition fees and charges?
No. Post-petition charges are disclosed through Rule 3002.1 notices, not on Form 410A, which captures only pre-petition amounts as of the petition date.
Will errors on Form 410A always lead to sanctions?
No. Courts have discretion under Rule 3001(c)(2)(D), but persistent or material omissions typically draw preclusion of evidence and fee-shifting in favor of the debtor.
Can a debtor file Form 410A on behalf of a secured creditor?
Yes. Under 11 U.S.C. § 501(c), a debtor or trustee may file a claim for a creditor who fails to do so, and the form requirements still apply.
Does Form 410A apply to reverse mortgages?
Yes. A reverse mortgage secured by the debtor’s principal residence triggers Rule 3001(c)(2)(C), although several fields fit awkwardly and many practitioners file a narrative addendum.
Is Form 410A used in Chapter 7 cases?
No. Chapter 7 cases rarely require the attachment because there is no cure-and-maintain plan, but creditors often file it voluntarily to preserve standing for relief from stay under 11 U.S.C. § 362(d).
Can a debtor challenge fees disclosed on Form 410A?
Yes. A debtor may file a Rule 3007 objection and, if the fee is unreasonable or unsupported by the agreement, the court will disallow it under 11 U.S.C. § 506(b).
Does Form 410A replace the original note and mortgage exhibits?
No. Rule 3001(c)(1) and (d) still require the writings on which the claim is based and evidence of perfection, in addition to the Form 410A attachment.
Related reading
- How to Fill Out U.S. Courts Form 204 (w/Examples) + FAQs
- How to Fill Out U.S. Courts Form 410 (w/Examples) + FAQs
- How to Fill Out U.S. Courts Form 410S1 (w/Examples) + FAQs
- How to Fill Out U.S. Courts Form 410S2 (w/Examples) + FAQs
- How to Fill Out U.S. Courts Form 420A (w/Examples) + FAQs
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