Content reviewed October 17, 2026 · Educational reference
The layered legal and regulatory "stack" within which an SIS operates.
The SIS rests on a clear, layered framework. On top sits federal tax law — §453 (installment reporting) and §453B (when gain accelerates) for the seller, and §72 (including §72(u)) for the funding annuity, which the assignment company owns; the seller's installment income is computed under §453, not under an annuity exclusion ratio. Beneath that is the state insurance system that regulates the insurer funding the payments: every funding insurer is licensed and examined by state regulators, follows conservative statutory accounting, holds mandated reserves, and must maintain risk-based capital.
The regulatory stack
- Federal tax law — §453 installment method · §453B disposition rules · §72 annuity taxation (the assignment company's funding annuity, not the seller's installment income) · the §130 distinction.
- State insurance regulation — licensing · NAIC model laws · McCarran-Ferguson reservation of state authority · financial examinations.
- Statutory Accounting Principles (SAP) — conservative, solvency-focused accounting, more stringent than GAAP.
- Reserves & Risk-Based Capital (RBC) — mandatory policy reserves · the NAIC RBC formula · a four-level intervention ladder.
- Policyholder safety net — state guaranty associations / NOLHGA · reinsurance · credit-rating discipline.
The §130 distinction
An SIS uses a non-qualified assignment, rather than a §130 qualified assignment. Section 130 covers specified periodic-payment liabilities excludable under §104(a)(1) or (2), including qualifying workers’ compensation and physical-injury or sickness amounts. A taxable asset sale does not meet that description. Its seller relies on §453 and related tax rules, while the assignment company’s and insurer’s tax and regulatory positions are separate layers.
Statutory accounting, reserves & the RBC ladder
Insurers report under Statutory Accounting Principles, hold required reserves, and are subject to risk-based-capital rules. RBC compares capital with the risks of the insurer’s business. Always identify the denominator: the following table expresses total adjusted capital as a percentage of Authorized Control Level RBC. A ratio calculated using Company Action Level as its denominator is not directly comparable.
Regulators use capital tests to identify deterioration and require corrective action. These tests do not guarantee that intervention will precede payment problems, and other supervisory triggers can apply.
| Level | RBC ratio | Regulatory action |
|---|---|---|
| No ratio-only trigger | ≥ 300% | No intervention from this ratio alone; other triggers can apply. |
| Trend-test range | 200%–<300% | Trend test can trigger Company Action Level. |
| Company Action | 150%–<200% | Company corrective plan. |
| Regulatory Action | 100%–<150% | Regulatory examination and corrective action. |
| Authorized Control | 70%–<100% | Regulator authorized to take control. |
| Mandatory Control | <70% | Mandatory-control provisions, subject to model/statutory exceptions. |
This chapter is the conceptual overview. For the full, citation-level catalog — every Code section, regulation, ruling, PLR, and case that establishes and constrains the SIS, with what each says and how it applies — see the Regulatory Authorities reference catalog.
What those bands do not say
State enactments and regulatory findings govern an actual insurer. RBC is a supervisory tool, not an investment ranking or a promise that losses cannot occur. A ratio should be tied to the named legal entity, reporting date, and denominator. Broad statements that leading carriers always have a particular ratio are not a substitute for current statutory filings.
Review licensing, financial statements, ratings with dates, concentration, and the exact contract in addition to RBC. See safety and security for the seller’s due-diligence questions.
Sources: IRC §453 — installment method; IRC §453A — interest and pledges; IRC §453B — dispositions of obligations; IRC §72 — annuity taxation; IRC §130 — qualified assignments; NAIC — Risk-Based Capital for Insurers Model Act.
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