1.1 IRS Model Trust and Custodial Agreements (Forms 5305 and 5305-A)

Statutory Foundation of Traditional IRAs (IRC § 408(a))

The Employee Retirement Income Security Act of 1974 (ERISA) established the modern Individual Retirement Arrangement framework codified in Internal Revenue Code (IRC) Section 408. Under IRC § 408(a), an Individual Retirement Account is defined as a trust (or custodial account under IRC § 408(h)) created or organized in the United States for the exclusive benefit of an individual or their beneficiaries. To qualify for tax-exempt status, the written governing instrument must satisfy six strict statutory requirements:

1. Cash Contribution Mandate: Except in the case of a rollover contribution or direct trustee-to-trustee transfer, the trustee or custodian cannot accept contributions unless they are in cash, and contributions cannot exceed the statutory limits established under IRC § 219(b) (for 2026, $7,500, or $8,600 for individuals age 50 or older, subject to annual cost-of-living adjustments).
2. Eligible Trustee or Custodian: The trustee or custodian must be a bank as defined in IRC § 408(n) (which includes national banks, state-chartered banks, trust companies, federally insured credit unions, and savings associations) or a non-bank trustee that has received formal written approval from the IRS pursuant to Treasury Regulation § 1.408-2(e) by demonstrating fiduciary ability, financial responsibility, and operational capacity.
3. Prohibition on Life Insurance: No part of the trust or custodial funds may be invested in life insurance contracts (IRC § 408(a)(3)).
4. Nonforfeitability: The interest of the individual in the balance of their account is completely nonforfeitable and 100% immediately vested at all times (IRC § 408(a)(4)).
5. Prohibition on Commingling: The assets of the trust or custodial account cannot be commingled with other property, except in a common trust fund or common investment fund maintained by a qualifying financial institution (IRC § 408(a)(5)).
6. Required Minimum Distributions: The entire interest of the individual must be distributed, or begin to be distributed, in accordance with the minimum distribution requirements of IRC § 401(a)(9) and the regulations thereunder (IRC § 408(a)(6)).

IRC § 408(h) explicitly provides that a custodial account shall be treated as a trust if the assets are held by a qualifying bank or approved non-bank entity, and if the custodial agreement satisfies all statutory requirements applicable to trusts.

Technical Distinctions: Form 5305 vs. Form 5305-A

Financial institutions establish Traditional IRAs using either Form 5305 (Traditional Individual Retirement Trust Account) or Form 5305-A (Traditional Individual Retirement Custodial Account). Although both forms achieve tax-qualified status under IRC § 408, they impose fundamentally different legal relationships, fiduciary standards, and administrative obligations.

Form 5305: Traditional IRA Trust Account

Under Form 5305, the financial institution acts as a trustee. A valid trust creates a dual-ownership structure:

• Title Separation: The bank trustee holds legal title to all assets in the IRA, while the individual (designated as the "Grantor") holds equitable and beneficial title.
• Fiduciary Responsibilities: In a traditional trust arrangement, the trustee is subject to fiduciary duties under common law and state trust codes (such as the Uniform Prudent Investor Act and Uniform Trust Code). Unless modified by a valid directed-trust provision in Article VIII, the trustee may bear legal exposure for asset management, portfolio diversification, and the prudence of underlying investments.
• Commercial Usage: Form 5305 is utilized primarily by bank wealth management departments, private banks, and institutional trust divisions where clients delegate discretionary investment authority or require specialized fiduciary administration for complex asset holdings.

Form 5305-A: Traditional IRA Custodial Account

Under Form 5305-A, the financial institution acts as a custodian.

• Legal and Beneficial Title: The participant (designated as the "Depositor") retains full legal and beneficial ownership of the assets. The custodian holds the assets in a nominee capacity for safekeeping and recordkeeping purposes.
• Ministerial Duties: The custodian provides nondiscretionary, ministerial services. The custodian executes purchases, sales, transfers, and distributions solely upon the written or authenticated electronic direction of the depositor or their authorized agent.
• Exemption from Investment Discretion: The custodian owes no common-law fiduciary duty to evaluate the financial suitability, performance, or diversification of the depositor's investment selections, provided the assets are permissible under the agreement and internal bank policy.
• Commercial Usage: Form 5305-A is the standard instrument used across retail banking, brokerage firms, mutual fund complexes, and self-directed IRA platforms holding bank certificates of deposit (CDs), mutual funds, publicly traded securities, and permissible alternative assets.

Comparative Analysis: Form 5305 vs. Form 5305-A

Anatomy of an IRA Plan Document: Articles I Through VIII

Both Form 5305 and Form 5305-A (current revision: April 2017) contain the same sequence of articles. The IRS states that only Articles I through VII have been reviewed by the IRS:

• Articles I through VII (Mandatory IRS Language): These seven articles contain the IRS model text. Financial institutions cannot alter, delete, or modify any sentence in Articles I through VII without losing model status.
  • Article I: Accepts only cash contributions up to the annual limit (with catch-up for age 50+), except rollovers, SEP employer contributions, and recharacterized contributions.
  • Article II: Declares the grantor's or depositor's interest in the balance to be nonforfeitable.
  • Article III: Bars investment in life insurance contracts, bars commingling (except in a common trust or common investment fund), and bars collectibles other than the coins and bullion permitted by IRC § 408(m)(3).
  • Article IV: Sets forth the distribution rules, including lifetime Required Minimum Distributions (RMDs) and post-death rules under IRC § 408(a)(6) and § 401(a)(9).
  • Article V: The depositor agrees to provide the information the custodian needs for reporting, and the custodian agrees to file the reports the IRS prescribes.
  • Article VI: Makes Articles I through III controlling and voids any added article that is inconsistent with IRC § 408(a).
  • Article VII: Provides that the agreement will be amended as necessary to comply with the Code and regulations; other amendments require the consent of the signers.
• Exam trap: The model forms have not been reissued since 2017, so their printed text still shows the old $5,500 limit and the age 70½ required beginning date. Article VII and the "incorporated by reference" language keep the agreement operating under current law (for example, RMD age 73 or 75 under SECURE 2.0), and institutions supply updated disclosure statements.
• Article VIII (Optional Provisions): Article VIII serves as the institution's contractual operating agreement. Banks and custodians draft custom provisions governing operational rights and responsibilities, including:
  • Fee schedules and authorization to debit annual custodial, transfer, or liquidation fees directly from account cash;
  • Resignation, removal, and appointment of successor trustees or custodians;
  • Indemnification and limitation of liability protecting the institution against participant investment losses;
  • Dispute resolution, binding arbitration, and choice of governing state law;
  • Procedures for handling stale beneficiary designations, disputed claims, and interpleader actions;
  • Rules governing notices, electronic communications, and voting of shareholder proxies.

Model Agreements vs. Prototype IRA Documents

A critical competency tested on the CISP examination is distinguishing between IRS Model Forms and Prototype IRA Documents:

IRS Model Agreements (Forms 5305 and 5305-A)

• Automatic Qualification: Model agreements are drafted and issued directly by the IRS. Using an unaltered model form confers automatic qualification under IRC § 408 without requiring an IRS opinion letter or a Private Letter Ruling (PLR).
• Filing Status: Model forms are never filed with the IRS. The executed agreement is retained permanently in the financial institution's records, with a copy delivered to the account owner.
• Rigidity: The core language of Articles I through VII cannot be reworded. Institutions may only customize the agreement through Article VIII.

Prototype IRA Documents

• Sponsorship and Customization: Financial institutions, trade associations, mutual fund companies, and insurance carriers frequently require comprehensive, branded plan documents with integrated administrative procedures that go beyond the basic IRS model form.
• Form 5306 Submission: To obtain IRS approval, the sponsoring organization must submit its prototype agreement, adoption agreement, and disclosure statement to the IRS National Office using Form 5306 (Application for Approval of Prototype Individual Retirement Arrangement).
• Opinion Letter: The IRS National Office reviews the prototype package and issues a formal Favorable Opinion Letter. This letter confirms that the form of the prototype complies with IRC § 408(a). Adopting financial institutions and their clients can rely on this opinion letter for tax qualification without seeking individual determinations.

Anatomy of the IRA Agreement Package

When opening an IRA, the financial institution must deliver a complete legal package to the depositor consisting of four distinct instruments:

1. The Adoption Agreement (Application): The signature instrument executed by the customer. It captures essential demographic information (legal name, physical address, Social Security number, date of birth), specifies the IRA type (Traditional, Rollover, SEP, or SIMPLE), establishes initial contribution funding, designates primary and contingent beneficiaries, records initial investment selections, and binds the customer to the plan agreement.
2. The Plan Document (General Provisions): The underlying legal contract (Form 5305, Form 5305-A, or an IRS-approved prototype) containing Articles I through VIII.
3. The Disclosure Statement: A non-technical, plain-language document mandated by Treasury Regulation § 1.408-6 explaining contribution rules, tax deductions, penalties, distribution rules, and statutory restrictions.
4. The Financial Disclosure: A detailed schedule outlining all fees, commissions, and charges levied on the account, alongside statutory disclosures regarding account earnings projection methods.

Required Bank Operational Procedures

IRA administrators must adhere to rigorous procedural controls when opening and executing IRA agreements:

Customer Identification Program (CIP) Verification

Pursuant to Section 326 of the USA PATRIOT Act (codified at 31 CFR § 1020.220), financial institutions must implement a written CIP as part of their Bank Secrecy Act / Anti-Money Laundering (BSA/AML) compliance program. Prior to or within a reasonable time after account opening, the bank must collect and verify four critical data points:

• Legal name;
• Date of birth;
• Residential street address (or principal place of business; PO boxes are impermissible without a physical residence);
• Taxpayer Identification Number (TIN), typically a Social Security Number (SSN).

The bank must verify identity using documentary methods (unexpired government-issued photo ID such as a driver's license or passport) or non-documentary methods (consumer reporting agencies, public databases). The customer must also be screened against the Office of Foreign Assets Control (OFAC) Specially Designated Nationals list.

Verification of Legal Capacity

The depositor must possess legal contractual capacity. A minor with compensation may own an IRA, but because minors generally lack contractual capacity, institutions typically require a parent or guardian to sign as the responsible individual (or open the account under the state's custodial-account rules) until the minor reaches the age of majority. If an agent executes documents on behalf of an adult depositor, the bank must review and verify an active, durable Power of Attorney (POA) or court-issued letters of conservatorship/guardianship before granting account authority.

Execution and Record Retention

The adoption agreement must be executed with a valid signature. Under the Electronic Signatures in Global and National Commerce Act (ESIGN) and Uniform Electronic Transactions Act (UETA), electronic signatures are legally binding, provided the bank captures an auditable digital trail (IP address, timestamp, multi-factor authentication).

Once executed, bank operations must set up the account on the core banking platform under the correct tax ownership code (Traditional IRA). The executed adoption agreement, plan document, and signature records should be kept under the institution's written record-retention policy, typically for the life of the account plus a period after closing. Federal law sets some minimums: for example, CIP identifying information must be kept for five years after the account is closed (31 CFR § 1020.220(a)(3)(ii)). Many institutions keep IRA records longer because beneficiaries and the IRS may ask for them years later.

Administrative Scenario: Custodial Execution vs. Trust Exposure

Consider a scenario where a client visits a commercial bank branch seeking to open an IRA funded with a $50,000 rollover check. The client intends to invest exclusively in bank certificates of deposit and self-directed mutual funds.

If the branch mistakenly provides Form 5305 instead of Form 5305-A, the bank inadvertently establishes a trust relationship. Under state trust law, this error exposes the bank to common-law fiduciary scrutiny regarding investment diversification and portfolio oversight.

A knowledgeable CISP professional identifies the error immediately: because the client exercises self-directed investment authority and the bank provides only depository and recordkeeping services, the account must be established using Form 5305-A. The administrator ensures that the customer signs the Form 5305-A adoption agreement, delivers the mandatory disclosure statement, logs the CIP verification, and codes the core accounting system as a nondiscretionary custodial account, completely shielding the bank from discretionary fiduciary liability.