Individual retirement account - An account set up by an individual that in some cases allows contributions to be deducted from income and permits earnings on contributions to accumulate tax-deferred until retirement, regardless of whether the contributions are deductible. Under the 1986 tax law, only those who do not participate in a pension plan at work or who do participate and meet certain income guidelines can make tax-deductible contributions to an IRA. All others can make contributions to an IRA on a non-deductible basis. .