This guide provides general education. It does not calculate your taxable amount or replace advice based on your contract, account, records, and filing facts.
The concept
The investment in the contract is generally the unrecovered after-tax cost, adjusted as the rules require. The expected return depends on the payment terms and, for life-contingent payments, IRS actuarial factors.
Under the General Rule, the exclusion ratio compares the investment in the contract with the expected return. The ratio is applied to payments subject to that rule, with limitations and adjustments explained in Publication 939.
Why a generic calculator can mislead
A correct calculation needs the annuity starting date, investment in the contract, payment amount and frequency, refund or survivor features, and relevant ages. Some employer-plan payments use the Simplified Method instead of the General Rule.
Those inputs can change the result materially. This site therefore explains the method but does not estimate a personal exclusion amount without the complete source facts.
Recovery does not continue without limit
The federal rules track how much investment has been recovered. Once the applicable investment is fully recovered, later payments are generally taxable. If payments stop because of death before the investment is fully recovered, a deduction may be available under the conditions described by the IRS.
A payer’s computation and Form 1099-R provide important evidence. Keep the original calculation and contract records because the recovery period can span years.
A practical file to keep
Retain the contract, premium and transfer history, annuity-starting-date statement, payer calculation, annual Forms 1099-R, and a running record of excluded amounts.
- Do not treat “basis” as the original premium without checking adjustments.
- Do not apply a prior year’s percentage after the investment has been recovered.
- Do not use the General Rule when the Simplified Method is required.