ERISA4204Bonds.com — A Surety One, Inc. portal • A companion property to ERISA-Bonds.com ☎ (800) 373-2804 ✉ Underwriting@SuretyOne.com
ERISA § 4204 · 29 CFR Part 4204 · MPPAA

The Bond That Closes Your Deal.

Every asset sale by an employer contributing to a multiemployer pension plan triggers withdrawal liability — unless the parties elect the § 4204 safe harbor, and the purchaser posts a bond for five plan years. ERISA4204Bonds.com underwrites that bond directly: negotiated placements on deal calendars, fund-counsel forms handled, escrow alternatives priced alongside, and the 29 CFR Part 4204 variance analysis run free on every file. Decisions in days, not weeks.

Email Underwriting
5 YearsPlan years the purchaser's bond secures the contribution covenant
Greater OfLast plan year vs. three-year average — the statutory penal sum
§ 412Surety qualification standard — 25,440+ ERISA bonds written against it
FreeVariance analysis on every file — including the answer "no bond required"
The Plain-English Version

What a § 4204 Bond Actually Does

An asset sale by a contributing employer is, by default, a complete withdrawal from the multiemployer plan — the event that crystallizes the seller's share of the plan's unfunded vested benefits into an immediate, often enormous, assessment. Section 4204 of ERISA is the statutory safe harbor that suspends that result: the seller exits with only secondary liability for five plan years, and only if the purchaser both withdraws and fails to pay.

Mechanically, the bond is a contract among three parties. The purchaser of the assets is the principal. The multiemployer plan is the obligee, the party being protected. The surety is the financial guarantor behind the whole arrangement. If the purchaser withdraws during the five plan years and fails to pay its withdrawal liability, the surety pays the plan — up to the penal sum — and then pursues the purchaser for reimbursement.

The safe harbor is unforgiving of sloppy drafting. Three covenants must appear in the purchase agreement itself: the purchaser's contribution-continuation obligation for substantially the same number of contribution base units, the purchaser's bond or escrow obligation, and the seller's contractual secondary liability. A transaction that closes without conforming provisions has not made a § 4204 election — it has made a complete withdrawal with extra steps.

A Three-Party Agreement

The purchaser is bonded, the plan is protected, and the surety backs the promise with real capital — qualified under ERISA § 412.

Bond or Escrow

The statute permits either. The bond preserves the purchaser's cash; the escrow ties up the full penal sum for five plan years. We price both and tell you which wins.

Or No Bond at All

29 CFR Part 4204 excuses the bond where its financial or de minimis tests are met. We verify on every file — free, in writing, against the post-closing balance sheet.

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Fund-Counsel Forms Handled

Multiemployer funds frequently prescribe their own bond forms. We review and negotiate them routinely; where none is prescribed, our manuscript § 4204 form governs.

Every Instrument in the § 4204 Toolkit

What We Underwrite

The purchaser bond is the flagship, but § 4204 practice produces a family of instruments and analyses. This desk handles all of them in-house — no brokered placements, no guesswork about which surety will answer on your file.

The Flagship · § 4204(a)(1)(B)

Sale of Assets Purchaser Bond

The five-plan-year bond securing the purchaser's contribution covenant, in the statutory penal sum — the greater of the seller's last-plan-year contribution or the three-year average. Underwritten on the purchaser's post-closing credit, the plan's zone status, and the operational continuity of the covered work. Multi-plan transactions receive one bond per plan, each separately calculated.

The Alternative

Escrow Structuring & Comparison

The statute permits an escrow with a bank or § 412-acceptable institution in lieu of the bond. It occasionally prices better — typically where the purchaser's credit prices the bond high — and always costs more cash. We price both side by side on every file and recommend in writing.

Before Any Premium

Variance & Exemption Analysis

29 CFR Part 4204 excuses the bond where its net income, net tangible assets, or de minimis tests are satisfied. We run the screen on every file against the post-closing balance sheet — and where the tests hold, the engagement ends with a letter saying no bond is required. Free, because that letter is the reason counsel sends the next file.

Complex Files

Multi-Plan & Multi-Party Programs

Sales touching several funds, carve-out transactions, and staged closings produce allocation questions the statute does not answer cleanly. Per-plan penal sums, coordinated effective dates, and one indemnity package supporting every instrument — administered by a single desk for the full five years.

Leveraged Credits

Sponsor & Collateral Structures

Private equity purchasers resist fund-level indemnity reflexively, and the conversation is better had at submission than at closing. Opco indemnity plus partial collateral, springing structures tied to covenant performance, or a sponsor guarantee at a better rate — structured to respect fund-level constraints.

Belt and Suspenders

Bonds on Exemptible Transactions

A contentious fund, a compressed calendar, insurance against a safe-harbor challenge five years out — sometimes the bond is worth posting even where a variance is arguable. We write those files knowingly, with the reasoning on the record.

About this desk. ERISA4204Bonds.com is a companion property to ERISA-Bonds.com, operated by Surety One, Inc. — 25,440+ ERISA bonds issued since 2012 with a zero loss ratio, § 412-qualified, licensed in all fifty states, Puerto Rico and the U.S. Virgin Islands. Where your transaction also requires plan fidelity bonding under § 412, both instruments issue from one desk, one indemnity package, one calendar. And because § 4204 transactions live inside a fiduciary framework, the same desk places fiduciary liability insurance — the coverage that protects plan fiduciaries and trustees personally, and the line ERISA counsel most often discover their clients are missing at exactly this moment in a transaction.
Poindexter crest
C. Constantin Poindexter, CPCU, JD, MA, AFSB, ASLI, ARe, AINS, AIS, CPLP
Founder, Surety One, Inc. · CEO, Janus Assurance Re · Author, The Contractor's Guide to Surety Bonds

Three decades in surety underwriting, with ERISA-regulated instruments as a core discipline since 2012. § 4204 desk underwriters were trained and apprenticed by seasoned operators in the surety space — every variance letter and every negotiated placement carries senior review and proven tradecraft.

Sizing the Bond

How Much Bond Does the Statute Actually Require?

The penal sum is fixed by § 4204(a)(1)(B), not by negotiation — and the exemption question should be answered before anyone spends a premium dollar. Run both here.

Penal Sum Calculator

The greater of the seller's contributions for the last plan year, or the average of the three preceding plan years. Multi-plan deals run separately per plan.

Indicated Penal Sum
$ —
Enter the seller's contribution history to the plan.

The Variance Worksheet

The bond is excused where any one criterion of 29 CFR Part 4204, Subpart B is demonstrated to the plan. This worksheet runs the arithmetic — indicative only. The conclusion issues solely as a written communication from this desk, verified against the post-closing figures.

One or more Part 4204 criteria appear satisfied.

Indicative only — the tests run on post-closing, § 4204.12-defined figures, and the demonstration is made to the plan. Submit the file with the purchaser's pro forma balance sheet; if the criteria hold on verification, our written response says no bond is required. No charge.

No criterion appears satisfied on these figures — the bond is likely required.

That is not a declination; it is the start of the placement. Submit the file: negotiated terms on the purchaser's post-closing credit, escrow priced alongside, fund-counsel forms handled. A PBGC individual variance request (§§ 4204.21–.22) remains available where the equities support one — we will tell you if yours does.

Worksheet figures transmit with your submission, so the desk receives a pre-populated variance file rather than a hunch.

⚠ Multi-plan deals and statutory increases

Each plan in the transaction receives its own bond at its own calculation — a seller contributing to three funds produces three instruments. And where a plan's condition invokes the statute's increase provisions, the number can rise above the base formula. Both are verified plan by plan before we quote — against PBGC guidance and the plan's own documents — and neither should be discovered at closing.

Getting Started

How to Submit a File

The process is deliberately light. Start the online submission on this page — or email your package to Underwriting@SuretyOne.com with the closing date in the subject line — and an underwriter opens your file the same business day.

Open the File

Complete the five-step submission on this page: contact, transaction outline, plan identity and contribution history, purchaser structure, and variance status. Ten minutes for a prepared submitter.

Send the Documents

Reply to the same-day acknowledgment with the APA, Form 5500 and zone certification, withdrawal liability estimate, and the purchaser's financials with pro forma. Anything missing is flagged up front so the file does not stall.

Variance Verified, Terms Quoted

The Part 4204 screen is re-run against the post-closing balance sheet, with our concurrence stated in writing. Where the bond is required, negotiated terms follow — typically inside the week, faster on compressed calendars.

Bond Issued for Closing

On acceptance, indemnity and premium are papered and the bond issues effective at closing — fund-counsel form or our manuscript — with the five-year term administered by this desk through release at expiry.

What to Have Ready

  • Asset Purchase AgreementWith the three § 4204 covenants drafted in
  • Closing Date & Deal CalendarDeadlines are worked first
  • Plan Identity — Each PlanMulti-plan deals: one bond per plan
  • Seller's 3-Year Contribution HistoryFixes the statutory penal sum
  • Form 5500 & Zone CertificationThe plan's funded status prices the risk
  • Withdrawal Liability EstimateThe § 4211 diligence letter — the true worst case
  • Purchaser Financials + InterimThree years, plus current period
  • Pro Forma Post-Closing Balance SheetThe credit we actually underwrite
  • CBA Assumption / Union ConsentEvidence the covered work continues
The Practitioner Library

Treatise-Depth Guides, Written by the Desk

Authored by C. Constantin Poindexter — the analysis we would want opposing counsel to have read. Statutory and regulatory citations throughout; the controlling Supreme Court authority where it governs.

The FrameworkWithdrawal Liability & MPPAAThe regime that makes § 4204 necessary — §§ 4201–4225, the allocation rules, and the Supreme Court quartet: R.A. Gray, Concrete Pipe, Milwaukee Brewery, Bay Area Laundry.Read the analysis → The ElectionThe § 4204 Safe HarborCovenant by covenant: contribution continuation, the bond or escrow, the seller's secondary liability — and the five drafting failures that void elections.Read the analysis → The ExemptionThe Part 4204 VarianceAll three tests in full arithmetic — de minimis, net income at 150%, net tangible assets against § 4211 UVBs — plus the multi-plan rule and the stale-analysis trap.Read the analysis → The NumberCalculating the Penal SumThe greater-of formula worked for growing and declining contributors, plan-year measurement, the multi-plan stack, and the plan-condition increase provisions.Read the analysis → The ChoiceBond vs. EscrowFive years of dead capital versus premium in basis points — the capital arithmetic, the three profiles where the escrow wins, and the hybrid structures between.Read the analysis → Sell-SideThe Seller's Five-Year TailSecondary liability as it actually operates, the disappearing-seller bond, the covenants worth negotiating into the APA, and release at expiry.Read the analysis → The InstrumentFund-Counsel Bond FormsWhat prescribed forms demand, where negotiation lives, the § 412 qualification standard, and the manuscript form where none is prescribed.Read the analysis → The DeskInside the UnderwritingThe nine documents, the four-stage analysis in fixed order, sponsor and collateral structures, and the five years of administration after issuance.Read the analysis →
Questions We Hear Every Week

§ 4204 Bond FAQ

What exactly is a § 4204 sale of assets bond?
It is the surety instrument that makes ERISA's sale-of-assets safe harbor work. When a contributing employer sells its assets, § 4204 lets the seller avoid withdrawal liability if — among other conditions — the purchaser posts a bond or escrow for the five plan years following the sale. The purchaser is the principal, the multiemployer plan is the obligee, and the surety answers if the purchaser withdraws during the period and fails to pay.
How is the penal sum calculated?
The greater of the seller's contributions to the plan for the last plan year before the sale, or the average of the three preceding plan years. Each plan in a multi-plan transaction gets its own bond at its own calculation, and statutory provisions can increase the number where the plan's condition invokes them — verified plan by plan before we quote.
Can we use an escrow instead of a bond?
Yes — the statute permits an escrow held by a bank or § 412-acceptable institution. The bond usually wins on cash efficiency, since the escrow ties up the full penal sum for five plan years; the escrow occasionally wins where the purchaser's credit prices the bond high. We price both and tell you which.
What is the variance, and do we qualify?
Under 29 CFR Part 4204, Subpart B, the bond and the sale-contract provision are excused where the parties notify the plan of the § 4204 election and demonstrate any one of three criteria: the purchaser's average net income after taxes for its three most recent fiscal years (less sale-related interest expense) equals or exceeds 150% of the bond amount; the purchaser's net tangible assets at the prior fiscal year-end equal or exceed the unfunded vested benefits allocable to the seller under § 4211 (plus the purchaser's own, if it already contributed); or the bond amount is de minimis — no more than the lesser of $250,000 or 2% of average plan-wide annual contributions. We run the arithmetic free on every file against post-closing figures, and if a criterion holds, our written answer is that no bond is required. Where none holds but the equities are strong, an individual variance request to PBGC under §§ 4204.21–.22 remains available.
What happens to the seller during the five plan years?
The seller retains contractual secondary liability: if the purchaser withdraws during the period and fails to pay its withdrawal liability, the plan can reach back to the seller. The bond sits in front of that exposure — which is why sellers' counsel care about the surety's quality as much as purchasers' counsel do. At the end of the fifth plan year, the secondary liability extinguishes and the bond is released.
The fund's counsel sent their own bond form. Is that a problem?
It's routine. Multiemployer fund counsel frequently prescribe forms, and we review and negotiate them as part of the placement. Where no form is prescribed, our manuscript § 4204 form governs — drafted to the statute and nothing beyond it.
Who signs the indemnity — and will a PE sponsor have to?
Corporate indemnity from the purchaser is standard; whether the structure requires sponsor or personal support depends on the post-closing credit. Opco indemnity plus partial collateral versus a sponsor guarantee at a better rate is a structuring conversation we have regularly — and it belongs at submission, not at closing.
How fast can this bind?
Complete files are acknowledged the same business day, with negotiated terms typically inside the week. Compressed closings are flagged and worked first — tell us the date in the submission, and the bond issues effective at closing.
Free Practitioner's Guide

The Definitive Reference, in Your Language

Written by our founder, the guide walks the § 4204 election end to end: the three covenants, penal sum mechanics, the Part 4204 variance tests, escrow alternatives, fund-counsel form negotiation, and the five-year administration of the instrument.

A Practitioner's Guide to ERISA § 4204 Sale of Assets Bonds — 2026 Edition

📚 Written by C. Constantin Poindexter, CPCU, JD, MA, AFSB, ASLI, ARe, AINS, AIS, CPLP, founder of Surety One, Inc., CEO of Janus Assurance Re, and author of The Contractor's Guide to Surety Bonds. Nine sections: the withdrawal liability problem, the three safe-harbor covenants, the bond as an instrument, penal sum calculation with worked illustrations, all three Part 4204 variance tests with the stale-analysis trap, bond-versus-escrow economics, the underwriting file, five-year administration, and a ten-question closing checklist. The resource we hand to M&A counsel, ERISA counsel, and fund administrators.

Let's Get Your Deal Closed.

Start the submission below, or send the package directly to underwriting with the closing date in the subject line. The variance analysis is free on every file — including when the answer is that you don't need us.

Call (800) 373-2804