What Is an Annuity Due?

An annuity due is a series of equal payments made at the beginning of each period rather than at the end. The timing difference is what defines it. The payment pattern may look simple, but it matters in finance because cash paid at the beginning of a period has a different present-value and future-value profile than cash paid at the end. That makes annuity due an important time-value-of-money concept in personal finance, retirement planning, insurance, and lease or payment analysis.

Key Takeaways

• An annuity due makes each payment at the beginning of the period.
• It differs from an ordinary annuity, where payments are made at the end of the period.
• The earlier payment timing changes present-value and future-value calculations.
• Annuity due is a finance-timing concept, not just an insurance-product label.
• The concept appears in rent, leases, premiums, and some retirement-income calculations.

How an Annuity Due Works

In an annuity due, the first payment happens immediately at the start of the schedule, and each later payment also arrives at the start of its period. Because every payment is made earlier than it would be in an ordinary annuity structure, each payment has one more period to earn interest or one less period to be discounted.

That timing difference is the whole reason the term matters. The payment amounts may be identical to those in another annuity structure, but the earlier schedule changes the math.

Annuity Due Versus Ordinary Annuity

An annuity due is usually contrasted with an ordinary annuity. In an ordinary annuity, payments occur at the end of each period. In an annuity due, they occur at the beginning. That means an annuity due will generally have a higher present value or future value than an otherwise identical ordinary annuity because the payments arrive or are invested earlier.

This distinction is central in time-value-of-money calculations and should not be treated as a minor wording difference.

Why Annuity Due Matters

Annuity due matters because many real-world payment schedules happen at the beginning of the period rather than the end. Rent, lease payments, insurance premiums, and some contractual cash-flow arrangements follow that pattern. In retirement and planning contexts, the concept can also help explain why timing assumptions matter when projecting future cash flows.

So even though the term sounds technical, it is tied to very practical money decisions.

Annuity Due Versus an Annuity Product

The phrase annuity due can be confusing because it includes the word annuity. In many finance settings, annuity due is not referring to a specific insurance product. It is referring to a payment pattern. An investor can therefore encounter annuity due in financial math even when no insurance annuity contract is involved.

That is why the term should be explained first as a cash-flow timing concept.

Example of an Annuity Due

Assume monthly rent is due on the first day of every month. That is an annuity due pattern because the payments are made at the beginning of each period. If the same rent were paid on the last day of every month instead, the schedule would resemble an ordinary annuity. The payment amount is the same, but the timing difference changes the value calculation.

This example shows why annuity due belongs in practical finance, not only in textbook exercises.

Why Timing Changes Value

The earlier a payment arrives or is made, the more it matters in a time-value-of-money framework. Money paid or received at the beginning of a period can be invested, earn return, or avoid discounting for longer than money arriving at the end. That is why annuity due calculations differ from ordinary annuity calculations even when the payment size and number of periods are unchanged.

The Bottom Line

An annuity due is a series of equal payments made at the beginning of each period rather than at the end. It matters because payment timing changes present-value and future-value calculations across many real-world financial situations. The clearest way to think about annuity due is as a cash-flow schedule that starts each period with a payment instead of ending with one.