Form 15417-B – 403(b) Plan Miscellaneous Provisions Worksheet 4A – Determination of 403(b) Status

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It helps to settle one thing before opening Form 15417-B: no taxpayer or plan sponsor files it. It is an IRS determination-review worksheet, part of the broader Form 15417 series, that an IRS reviewer completes to test whether a 403(b) plan satisfies its miscellaneous qualification provisions.

Officially it is Worksheet 4A, the IRS 403(b) Plan Miscellaneous Provisions worksheet (Catalog Number 94030S, Rev. 4-2023), a 3-page tool covering four sections: I. Terminations, II. Rollover Contributions, Exchanges and Transfers, III. Funding Issues, and IV. General Issues. Every item is answered Yes, No, or N/A, with a Yes generally favorable and any No explained in the worksheet space. Section II is the most detailed, running ten items across rollover acceptance, designated and in-plan Roth rollovers, transfers, and contract exchanges.

Key Takeaways

• “Form 15417‑B” means the IRS 403(b) Plan Miscellaneous Provisions Worksheet 4A (Catalog Number 94030S, Rev. 4-2023), the official IRS tool used to review a 403(b) plan's qualification. IRS reviewers use it as a checklist to confirm a 403(b) plan satisfies its miscellaneous qualification provisions across terminations, rollovers, funding, and general issues.
• The worksheet has four sections: I. Terminations, II. Rollover Contributions, Exchanges and Transfers, III. Funding Issues, and IV. General Issues. Every item is answered Yes, No, or N/A, and all items must be completed.
• A 'Yes' generally indicates a favorable conclusion; a 'No' indicates a problem that must be explained in the worksheet space, not treated as automatic disqualification.
• On termination, the plan must provide that all accumulated benefits are fully vested and distributed as soon as administratively practicable. The employer may not contribute to an alternative 403(b) contract from termination until 12 months after all assets are distributed, subject to a 2% exception.
• Section II is the most detailed, with ten items covering rollover acceptance, section 72 basis, designated Roth rollovers, in-plan Roth rollovers, recontributions, plan-to-plan transfers, and contract exchanges. It cross-references Worksheet 15 for additional rollover rules.

What Form 15417-B Is, And What It Is Not

Think of Form 15417-B as the IRS reviewer's checklist for testing whether a 403(b) plan meets its miscellaneous qualification provisions, not a taxpayer filing. Each item ties to a specific plan provision, a Plan Reference, and a Yes, No, or N/A answer.

What it is

• An IRS determination-review worksheet (Worksheet 4A) that maps each plan provision to a worksheet item answered Yes, No, or N/A.
• A structured way to confirm the plan document addresses terminations, rollovers, exchanges, transfers, funding, and general qualification provisions.
• A pointer back to the governing authorities, including IRC section 403(b) and Treasury regulations 1.403(b)-3 through 1.403(b)-10.

What it is not

• A return filed by a taxpayer or plan sponsor.
• The binding statute itself; the instructions note the technical principles may be changed by future regulations or guidelines.
• A pass/fail scorecard where a single 'No' ends the review; each 'No' is explained and resolved.

The worksheet leaves space to explain any 'No' answer, and it cross-references Worksheet 15 for more rollover rules and Worksheet 16 for retirement income account treatment. Keep the plan document next to you so each Plan Reference can be filled before review.

Who Uses The Worksheet

Form 15417-B is completed by IRS reviewers as part of a 403(b) plan determination review, but plan sponsors, plan administrators, third-party administrators, and benefits practitioners use the same worksheet structure to self-check a plan document before a review or restatement. Working through each item in advance, with the Plan Reference column filled in, lets the actual review move quickly.

This approach is about clarity and control. A plan-review workpaper that mirrors the worksheet's four sections, with each provision cited to a plan section, beats a scramble through the document during a live review.

How The Yes, No, N/A Answers Work

Each item is answered in one of three ways, and all items must be completed.

• Yes generally indicates a favorable conclusion: the plan document satisfies the provision being tested.
• No indicates a problem exists. It does not automatically disqualify the plan; the reviewer must use the worksheet space to explain the deficiency.
• N/A is used when a provision does not apply to the plan, for example an optional feature the plan does not adopt. Mark N/A rather than skipping the item.

The instructions also remind reviewers that the technical principles in the worksheet may change with future regulations or guidelines, so the worksheet is a current checklist, not a frozen authority.

The Four Sections At A Glance

Section	Focus	Items	Key Authorities
I. Terminations	Full vesting on termination, in-kind ICA distributions, the 12-month post-termination rule, loss of eligible-employer status	Items a through e	Treas. Reg. 1.403(b)-10, Rev. Rul. 2011-7
II. Rollover Contributions, Exchanges and Transfers	Rollover acceptance, section 72 basis, designated Roth and in-plan Roth rollovers, recontributions, plan-to-plan transfers, contract exchanges	Items a through j	Section 402A(b), section 72, Treas. Reg. 1.403(b)-10(b)(2) and (b)(3)
III. Funding Issues	Permitted funding vehicles, satisfying 1.403(b)-8, timely transmission to the vendor	Items a through c	Section 403(b)(9), Treas. Reg. 1.403(b)-8
IV. General Issues	USERRA military service, survivor benefits, exclusive-benefit rule, QDRO and DRO distributions	Items a through d	Section 414(u), 414(p)(9), 401(a)(13), Treas. Reg. 1.403(b)-8(d)(2)(iii)

Each table has five columns: the item description, a Plan Reference column, and Yes, No, N/A checkboxes. After each section, the reviewer explains any 'No' answers.

Section I, Terminations

Full Vesting And Distribution

Item I(a) asks whether the plan expressly provides that, on termination, all accumulated benefits become fully vested and are distributed to all participants as soon as administratively practicable. Pre-existing vesting schedules do not survive a termination; the document must require automatic full vesting.

In-Kind ICA Distributions And Tax-Deferred Treatment

• Item I(b) is optional: whether, on termination, the plan administrator or custodian may distribute an individual custodial account (ICA) in kind.
• Item I(c) is required if the plan allows ICA distributions: the document must state the distributed custodial account will be maintained by the custodian on a tax-deferred basis as a section 403(b)(7) custodial account, similar to the treatment of fully paid individual annuity contracts under Rev. Rul. 2011-7.

The 12-Month Rule And Loss Of Eligibility

Item I(d) prohibits the employer or a related employer from contributing to an alternative section 403(b) contract that is not part of the plan, from the date of plan termination until 12 months after all assets are distributed, subject to a 2% successor-plan exception under Treas. Reg. 1.403(b)-10(a)(1). Item I(e) requires the plan to prohibit further contributions to a 403(b) contract once the employer ceases to be an eligible employer.

Section II, Rollovers, Exchanges And Transfers

Rollover Acceptance And Basis

• Item II(a): the plan document must state whether it accepts contributions of eligible rollover distributions. If rollovers are not accepted, items II(b) through (d) are not completed.
• Item II(b): if the plan accepts rollovers that include after-tax employee contributions or designated Roth contributions, it must require that the employee's section 72 basis in the amount rolled over be provided.
• Item II(c): if the plan accepts designated Roth rollovers, it must also permit employees to make elective deferrals that are designated Roth contributions.

In-Plan Roth Rollovers

Item II(d) tests in-plan Roth rollovers. If allowed, the plan must specify a qualified Roth contribution program (as defined in section 402A(b)); only vested amounts are eligible; otherwise nondistributable amounts can be rolled over only via a direct rollover (the 60-day method is available only for distributable amounts); and nondistributable amounts rolled over remain subject to the distribution restrictions that applied to them before the rollover.

Recontributions, Transfers, And Contract Exchanges

• Items II(e) through II(g): recontributions of Qualified Birth or Adoption Distributions (the eligible adoptee definition must exclude children of the taxpayer's spouse), coronavirus-related distributions, and federally declared disaster distributions.
• Item II(h): plan-to-plan transfers to another 403(b) plan are permitted only if the conditions of Treas. Reg. 1.403(b)-10(b)(3) are met.
• Item II(i): transfers to a qualified plan are limited to either permissive service credit under a governmental defined benefit plan or a repayment to which section 415 does not apply under section 415(k)(3).
• Item II(j): contract requirements, including that contract exchanges follow Treas. Reg. 1.403(b)-10(b)(2) and that the contract is not transferable per 1.403(b)-3(a)(5).

Section III, Funding Issues

• Item III(a): all amounts contributed to the plan must be invested in an annuity contract, a custodial account, or, if the plan is a section 403(b)(9) plan, a retirement income account. A retirement income account treated as an annuity contract is not a custodial account (see Worksheet 16).
• Item III(b): the investment arrangements' annuity contracts or custodial accounts must satisfy the requirements of Treas. Reg. 1.403(b)-8.
• Item III(c): contributions must be transferred to the vendor within a period not longer than is reasonable for proper administration, and for elective deferrals within a specified period after the date the amounts would otherwise have been paid to the participant.

Keep the funding analysis tight. If a vehicle or a transmission timeline does not fit one of these items, mark it 'No' and explain it in the worksheet space.

Section IV, General Issues

Military Service And Survivor Benefits

• Item IV(a): the plan must provide that, with respect to qualified military service, contributions, benefits, and service credits are provided in accordance with section 414(u), reflecting USERRA make-up rights.
• Item IV(b): survivors of any participant who dies while on military service must be entitled to any additional benefits that would have been provided had the participant resumed employment and then terminated employment on account of death.

Exclusive-Benefit Rule

• Item IV(c): the plan must prohibit diversion of any part of the assets and income of a custodial account for any purpose other than the exclusive benefit of participants and their beneficiaries, prior to the satisfaction of all liabilities, in accordance with Treas. Reg. 1.403(b)-8(d)(2)(iii).

QDRO And DRO Distributions

• Item IV(d): any distribution pursuant to a domestic relations order (applicable only to churches and governments) or a qualified domestic relations order (QDRO) must be treated like a distribution from a plan to which section 401(a)(13) applies, pursuant to section 414(p)(9).
• The distribution restrictions under Treas. Reg. 1.403(b)-6 are not violated by such distributions, so QDRO payouts are not blocked by those restrictions.

Keep each answer tied to a plan section. If a provision is missing, mark 'No' and note the corrective amendment in the worksheet space.

Plan Reference Evidence That Speeds Review

Plan Document Provisions

• The plan document itself, with each tested provision cited by section number in the Plan Reference column.
• Any adoption agreement, amendments, or restatement that adds optional features such as ICA distributions or in-plan Roth rollovers.
• Investment arrangement documents (annuity contracts, custodial agreements, or retirement income account terms).

Supporting Procedures

• Rollover acceptance and section 72 basis-collection procedures for after-tax and designated Roth amounts.
• Vendor transmission timelines for contributions, especially elective deferrals.
• Information-sharing agreements supporting contract exchanges and plan-to-plan transfers.

Notes For Each 'No'

• A short written explanation for every 'No' answer, citing the plan section at issue and the corrective amendment in progress.
• An N/A note for optional features the plan does not adopt, so nothing looks silently skipped.

If a provision is not yet in the document, show the corrective amendment plan. Reviewers care about a clear path to compliance.

In-Plan Roth Rollovers, Read Carefully

In-plan Roth rollovers cause more confusion than any other Section II item. The plan must specify the feature and provide a qualified Roth contribution program under section 402A(b). Only vested amounts are eligible. An otherwise nondistributable amount can be rolled over only by direct rollover, never the 60-day method, and the original distribution restrictions continue to follow the converted assets. The 60-day method is available only for amounts that are otherwise distributable.

Avoiding The Errors That Stall A Review

• Marking an item 'No' with no written explanation in the worksheet space.
• Skipping inapplicable items instead of marking them N/A.
• Reading Item I(c) as fully optional when the plan allows ICA distributions.
• Summarizing the 12-month post-termination rule as running from the termination date rather than from the date assets finish distributing.
• Accepting designated Roth rollovers without a Roth elective deferral feature.
• Treating a retirement income account as a custodial account subject to 403(b)(7) rules.
• Citing the worksheet as the binding statute rather than as a checklist that may change with future guidance.

Post-Termination Contribution Rules

The most-misquoted item on the worksheet is the post-termination window in Item I(d). The prohibition begins on the date of plan termination and ends 12 months after the distribution of all assets from the plan, not 12 months after the termination date. If distributions take time, the window can run well over a year. The 2% exception under Treas. Reg. 1.403(b)-10(a)(1) treats the employer as not having maintained an alternative 403(b) plan if no more than 2% of employees eligible under the terminated plan participate in a successor plan during the period.

State the 12-month post-distribution prohibition and the 2% exception together. Quoting one without the other is the common slip.

Worked Example, A Termination Review

Scenario

• A section 501(c)(3) employer terminates its 403(b) plan and wants to confirm Section I is satisfied before the IRS review.

Worksheet walk-through

• Item I(a): the plan states all accumulated benefits become fully vested and are distributed as soon as administratively practicable. Answer Yes, Plan Reference cited.
• Items I(b) and I(c): the plan does not allow in-kind ICA distributions, so I(b) is No and I(c) is marked N/A, with a note.
• Item I(d): the document prohibits alternative 403(b) contributions from termination until 12 months after all assets are distributed, with the 2% exception. Answer Yes.
• Item I(e): the plan bars further contributions once the employer ceases to be an eligible employer. Answer Yes.

Outcome

• Section I is favorable except for the optional ICA feature, which is documented as not adopted. Each 'No' and N/A carries a short written explanation in the worksheet space.

Coordinating Worksheets 15 And 16

Form 15417-B does not stand alone. Section II carries a note directing reviewers to Worksheet 15 for additional rollover rules, so any close call on rollover acceptance, basis, or in-plan Roth treatment should be confirmed against that worksheet. Section III references Worksheet 16 for the treatment of a retirement income account that is treated as an annuity contract, which is not a custodial account. Reading the related worksheets alongside 15417-B keeps Section II and Section III answers consistent.

Recordkeeping And Plan References

• Keep the completed worksheet with each Plan Reference cited to a specific plan section.
• Retain the plan document, adoption agreement, amendments, and any restatement that adds optional features.
• Keep the written explanation behind every 'No' and the basis for each N/A.
• Retain investment arrangement documents and any information-sharing agreements supporting exchanges and transfers, so the file is review-ready whenever the determination cycle reopens.

Where Accountably Fits, Only If It Helps

If a 403(b) determination review stalls because plan references and workpapers are scattered, the problem is delivery, not intent. Accountably integrates trained offshore teams inside your systems to standardize the review workpaper, maintain version control, and map each plan provision to the worksheet's Plan Reference column. That reduces senior review time, keeps the worksheet answers consistent, and helps a restatement or determination cycle move without scrambling. It is not a band‑aid, it is disciplined execution when you choose to use it.

What‑How‑Wow Recap

• What, Form 15417-B is the IRS 403(b) Plan Miscellaneous Provisions Worksheet 4A, tested across four sections.
• How, work each item with a Plan Reference and a Yes, No, or N/A answer, explaining every 'No' in the worksheet space.
• Wow, the worksheet doubles as a self-check: map provisions to plan sections in advance and a live review moves in minutes, not days.

Clear provisions, clear references, clear explanations. That is how a 403(b) determination review stays on track.

Brief Disclaimer

This guide is educational, not legal or tax advice. The 403(b) rules and IRS practices can change, and the worksheet instructions note that the technical principles may be changed by future regulations or guidelines. Confirm each provision against the current Form 15417-B and the governing authorities under IRC section 403(b) and the Treasury regulations for your plan and facts.

Common Mistakes We See Every Season

The same handful of slips show up whenever a 403(b) plan goes through a 15417-B review. Each one is avoidable once you know which item the IRS reviewer is actually testing.

Reusable Checklists

These checklists mirror the four sections of Form 15417-B so you can paste them straight into a plan-review SOP. Each item ties to a worksheet line, so a reviewer can confirm it against the plan document in minutes.

Keep 15417-B Season From Stalling

A 403(b) determination review does not arrive on a fixed calendar the way a quarterly 941 does, but Form 15417-B still creates a concentrated burst of documentation work. The worksheet spans four sections, and Section II (Rollover Contributions, Exchanges and Transfers) alone carries ten separate items, each demanding a plan-document reference and a defensible Yes, No, or N/A. When a restatement cycle or an IRS request lands, that work tends to hit all at once.

The teams that move fastest do not treat the worksheet as a last-minute scramble. They build a standing review workpaper that mirrors the form's four sections and fills the Plan Reference column before the reviewer ever opens the file.

• Map each plan-document provision to the worksheet's Plan Reference column up front, so Section I termination language, including the 12-month and 2% post-termination rule, is locatable in seconds.
• Pre-stage Section II evidence: whether rollovers are accepted, that section 72 basis is collected for after-tax and Roth amounts, and that nondistributable in-plan Roth rollovers use direct rollover only.
• Keep a standing N/A log so Section III funding items and Section IV USERRA and QDRO provisions are marked and explained, never silently skipped.
• Capture a written explanation for every 'No' as it comes up, since the worksheet requires it and a blank 'No' is the single most common cause of a stalled review.

When that documentation work outpaces the team on hand, a structured, SOP-driven workpaper process keeps it moving. Our tax and compliance execution team builds the standardized workpapers and multi-layer review that turn a 403(b) determination packet from a scramble into a repeatable process.

FAQs

Is Form 15417-B an official IRS form?

Yes. Form 15417-B is an officially published IRS worksheet (Catalog Number 94030S, Rev. 4-2023): the 403(b) Plan Miscellaneous Provisions Worksheet 4A, Determination of 403(b) Status. In IRS practice, “15417‑B” refers to Worksheet 4A, the determination-review worksheet IRS reviewers use to evaluate whether a 403(b) plan satisfies its miscellaneous qualification provisions. It is an internal review tool, not a return filed by a taxpayer or plan sponsor.

How many sections does Form 15417-B cover?

Four. The worksheet is organized as I. Terminations, II. Rollover Contributions, Exchanges and Transfers, III. Funding Issues, and IV. General Issues. Every item is answered Yes, No, or N/A, and all items must be completed.

Does a 'No' answer fail the plan?

No. Per the Form 15417-B instructions, a 'Yes' generally indicates a favorable conclusion and a 'No' indicates a problem exists. Each 'No' must be explained in the worksheet space rather than treated as automatic disqualification.

How long after a 403(b) plan termination is an alternative contract prohibited?

Item I(d) prohibits the employer or a related employer from contributing to an alternative section 403(b) contract from the date of plan termination until 12 months after all plan assets are distributed, subject to a 2% successor-plan exception under Treas. Reg. 1.403(b)-10(a)(1).

Can any in-plan Roth rollover use the 60-day method?

Only for amounts that are otherwise distributable. An in-plan Roth rollover of an otherwise nondistributable amount can only occur via a direct rollover, and the original distribution restrictions continue to follow the converted assets.