An assumed interest rate is the benchmark used to determine initial and projected annuity payment behavior in variable or participating designs.
Insurance mechanics
In variable annuity products, the assumed rate can set an initial payment schedule, but ongoing performance depends on investment results.
When actual returns diverge, actual payouts are adjusted according to product terms.
Claims and policyholder impact
Under this design, policyholders should treat assumptions as one input, not as a guaranteed return rate. Insurers disclose methodology and performance-reset mechanics at issue.
Regulation and disclosures
Annuity contracts commonly require clear statements on credited rates, participation formulas, and guarantee limits, especially where income may be variable.