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Start with a future payment rather than a yield ranking. Suppose you want a nominal $10,000 available in ten years for a known expense. A Treasury STRIP can turn that future payment into a price you evaluate today, but it also introduces questions about early-sale value and tax cash flow.
The attraction is a single scheduled payment without intervening coupons to reinvest. The danger is reading that fixed future payment as a stable account balance you can withdraw whenever you like. Those are different features.
This article works backward from a fictional $10,000 obligation using an explicitly simplified annual-compounding model. The rates are assumptions, not current quotes. Actual Treasury trading uses market conventions, settlement dates and dealer pricing that this teaching model does not reproduce.
Define Exactly Which Payment You Are Buying
STRIPS stands for Separate Trading of Registered Interest and Principal of Securities. A stripped payment becomes a separate security rather than remaining attached to all the other payments of its original Treasury instrument. For this example, consider a fixed nominal principal payment from a Treasury note or bond, not an inflation-linked TIPS payment.
TreasuryDirect's STRIPS explanation says investors buy and hold STRIPS through a financial institution, broker or dealer, rather than inside TreasuryDirect. The product name therefore does not mean you can place the order in the same account used to buy a Treasury bill directly.
On the broker's screen, identify the security, maturity date, amount due at maturity and quoted purchase cost. The maturity value is not the same thing as the amount you invest. A quote expressed per $100 of maturity value must be translated into the actual trade's dollars before you can compare it with your budget.
Write your future dollar obligation and required availability date before opening a bond screener. If the date is uncertain or the money may be needed earlier, note that uncertainty beside the target rather than hiding it inside a yield comparison.
Reverse the $10,000 Target Into Today's Price
For an educational single-payment model, present value equals the future payment divided by one plus the annual discount rate raised to the number of years. At an assumed 4.5% annual rate for ten years, that is $10,000 ÷ 1.045^10, or approximately $6,439.28.
The $3,560.72 difference between purchase price and future payment is not a stream of cash deposited into your account every year. In this model, the entire $10,000 arrives at maturity. The interim increase represents the passage of time and the discount unwinding under the original assumptions.
| Ten-year model input | Present-value calculation | Educational price |
|---|---|---|
| $10,000 due, 4.5% annual rate | $10,000 ÷ 1.045^10 | $6,439.28 |
| $10,000 due, 5.5% annual rate | $10,000 ÷ 1.055^10 | $5,854.31 |
| Price difference | $6,439.28 − $5,854.31 | $584.97 |
A higher required yield corresponds to a lower price for the same fixed payment and maturity. That relationship explains why an existing position's market value can fall when market yields rise. It also explains why comparing only the promised maturity payment misses the price risk borne before maturity.
Do not turn these values into a broker order by assuming they are executable quotes. Real quotations may use different compounding conventions and can include a spread or markup. Ask for the total settlement amount and yield calculation associated with the actual security and quantity.
Run the One-Year Exit Experiment
Now suppose you bought the modeled payment for $6,439.28 and unexpectedly need to sell one year later. Nine years remain. Recalculate the remaining payment at the yield buyers require at that time rather than assuming your original yield determines the sale proceeds.
If the required annual rate remains 4.5%, the model price becomes $10,000 ÷ 1.045^9, approximately $6,729.04. If it rises to 5.5%, the model price becomes $10,000 ÷ 1.055^9, approximately $6,176.29.
| One year after purchase | Modeled value | Change from original cost |
|---|---|---|
| Nine years left at 4.5% | $6,729.04 | About +$289.77 using unrounded values |
| Nine years left at 5.5% | $6,176.29 | About −$262.98 using unrounded values |
Subtracting the displayed rounded numbers gives $289.76 in the first row and −$262.99 in the second; rounding the difference from the full-precision model gives $289.77 and −$262.98. The one-cent discrepancies are rounding effects, not extra income or loss. The example deliberately makes the calculation method visible.
These figures exclude taxes, transaction costs and the difference between a dealer's bid and offer. A broker's displayed valuation may not be the price available for your sale. Get an actual bid if early liquidation becomes necessary, and check when the resulting cash will be available.
The experiment illustrates price sensitivity without predicting next year's rate. The maturity payment stays the same in this nominal model, while the value of receiving it nine years in the future changes. The emergency fund should therefore be evaluated separately from this scheduled future-payment position.
Add a Tax Cash-Flow Line to the Worksheet
A security that sends no annual coupon can still generate taxable income in a taxable account. IRS Publication 1212 discusses original issue discount, including stripped bonds and coupons, and the requirement to include applicable OID as it accrues. Waiting until maturity to think about tax can leave the cash-flow plan incomplete.
Imagine, independently of the price model, that the applicable taxable OID for a year is $250 and your assumed federal marginal rate is 24%. A simple illustration gives $250 × 24% = $60. That $60 would need funding from available cash even though the security sends no coupon that year.
The $250 is a hypothetical reported-tax amount, not an OID calculation derived from the ten-year annual-compounding model. Actual tax reporting can depend on acquisition details and adjustments. Do not divide the total discount by ten and treat the result as the annual amount to report.
Keep trade confirmations and tax documents. Ask your tax professional how the holding is treated in the account you intend to use, including how relevant basis adjustments are tracked. An account's tax treatment can affect suitability, but choosing a retirement account merely to avoid an immediate tax bill can create separate access and planning questions.
Add a line to your worksheet titled “annual tax cash source.” If that line is blank, the proposed purchase may be affordable at settlement and still inconvenient during the holding period. Planning for tax funding is part of matching a future obligation, not an afterthought to the quoted yield.
Test the Target Against Inflation and Timing
The selected nominal payment is $10,000 in future dollars. It does not automatically purchase what $10,000 buys today. At an assumed 3% annual inflation rate for ten years, $10,000 ÷ 1.03^10 is approximately $7,440.94 in today's purchasing power. That rate is a scenario input, not an inflation forecast.
Ask whether the obligation is truly fixed in dollars. A contractual payment of a known amount is different from an estimate of future college, renovation or care expenses. A nominal security can match the first amount while leaving uncertainty about the second. Calling the expense “ten thousand dollars” today does not freeze its future price.
Timing also matters. A maturity just after the invoice is due can force an early sale or another source of funds. A maturity well before the invoice introduces a period in which the proceeds need safe handling. Record both the security's maturity and the practical date by which money must be usable.
For multiple expenses at different dates, create separate obligation rows rather than assigning one maturity to every bill. You may discover that only one part of the plan fits a single-payment security. That result is useful; the goal is to match a liability, not to make every savings dollar fit a favorite instrument.
Read the Trade Ticket as a Funding Plan
Before buying, connect the broker's order details to the worksheet. Confirm that the maturity amount covers the intended obligation, the security type matches the example you analyzed, and the total purchase cost fits available funds after preserving necessary liquid reserves.
Ask how the quote expresses price, whether a markup or commission applies, and whether the quantity is available on the terms displayed. Then ask how to request a sale quote later. You do not need to plan an early sale, but you should understand the process before relying on the position as a fallback source of cash.
Do not substitute a fund simply because its name contains “Treasury” or “zero coupon.” A fund owns a portfolio and has its own trading price, expenses and portfolio changes. It does not automatically deliver your specified $10,000 on your selected date. Evaluate any fund on its actual structure rather than importing the single-security model.
Before placing an order, fill in five fields: payment date, maturity amount, total settlement cost, early-sale contingency and tax cash source. If one field depends on an unverified assumption, obtain the answer from the broker or appropriate adviser before treating the target as funded.
Frequently Asked Questions
Can I buy STRIPS directly in TreasuryDirect?
TreasuryDirect says STRIPS are held and transacted through financial institutions, brokers or dealers, rather than its retail account system. Check the broker's available securities and trading terms before assuming a familiar Treasury purchase process applies.
Does a fixed maturity payment eliminate the chance of an early-sale loss?
No. The model shows a lower sale value when the required yield rises, even after a year has passed. Actual proceeds also depend on the bid, transaction costs and timing. Plan a separate response for expenses that arrive before maturity.
Are there annual coupons to pay the tax bill?
The single stripped payment in this example has no intervening coupons. Applicable OID can nevertheless be taxable as it accrues in a taxable account. Identify another cash source and obtain the reporting details for your own holding.
Does every Treasury STRIP protect purchasing power?
No. This article models a fixed nominal payment from a Treasury note or bond, not a TIPS-derived instrument. The inflation illustration shows why a fixed future dollar amount may not cover an expense whose price changes over time.
Model note: All rates and scenarios are hypothetical. The annual-compounding calculations omit actual trading conventions, fees and taxes. This is an educational framework, not a recommendation to buy a particular security.
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