A cash flow hedge is a hedge of exposure to variability in future cash flows that comes from a particular risk and could affect profit or loss. The hedged item can be a recognised asset or liability with variable payments, such as a floating-rate loan, or a highly probable forecast transaction, such as a planned purchase of raw materials priced in a foreign currency. Companies use cash flow hedges to lock in what they will pay or receive.
A cash flow hedge is one of the main categories in hedge accounting, alongside the fair value hedge and the hedge of a net investment in a foreign operation. The difference with a fair value hedge is the target: a fair value hedge protects the value of something already on the books, typically a fixed-rate instrument, while a cash flow hedge protects the amount of future payments. IFRS 9 and ASC 815 set the rules, and each hedge must pass a hedge effectiveness assessment.
Cash flow hedge in plain terms
Think of a family that heats its house with oil. Every winter the price changes, so the heating bill is a guess. If the family agrees with a supplier in summer to buy next winter's oil at a set price, they no longer care what the market does. Their bill is fixed, whether prices rise or fall.
A cash flow hedge is the business version of that agreement. The company still makes its future payments, but a separate contract tops it up when costs rise and takes money back when they fall. The accounting rule then makes sure the gain or loss on that contract shows up in profit at the same time as the payment it was protecting, rather than months earlier.
How the accounting works
The hedging instrument, usually a derivative, is carried on the balance sheet at fair value. Changes in that fair value are split. The effective portion goes to other comprehensive income (OCI) and builds up in equity in a cash flow hedge reserve. Under IFRS 9 any ineffective portion goes straight to profit or loss; under US GAAP, since ASU 2017-12, the whole change in the designated instrument is recorded in OCI and no separate ineffectiveness is measured.
The amounts in the reserve are later moved, or "recycled", into the income statement when the hedged cash flows affect profit, for example as each interest payment is recognised. If the hedged forecast transaction results in a non-financial asset, such as inventory, IFRS 9 requires the reserve amount to be removed from equity and included in the asset's initial cost (a basis adjustment). If a forecast transaction is no longer expected to happen, the reserve is reclassified to profit or loss immediately.
Common examples
- Floating-rate debt swapped to fixed. A borrower with a loan or floating rate note that pays SOFR plus a margin enters a pay-fixed, receive-floating interest rate swap, turning uncertain interest into a known cost.
- Forecast foreign-currency purchases or sales. An importer buys a forward contract to fix the exchange rate on supplier payments due in a few months, reducing foreign exchange risk.
- Commodity inputs. An airline or manufacturer hedges future fuel or metal purchases with futures, swaps or options.
Worked example
A US company expects to pay a supplier EUR 10 million in six months and treats the purchase as highly probable. It buys EUR 10 million forward at 1.10 US dollars per euro and designates the forward as a cash flow hedge. The hedge is fully effective. When the payment date arrives, the spot rate is 1.15.
The forward is worth the difference between spot and the agreed rate:
The 500,000 dollar gain sits in the cash flow hedge reserve until the purchase happens. The goods cost 11.5 million dollars at spot. Under IFRS 9 the reserve is moved into the inventory cost, giving 11.5 − 0.5 = 11.0 million dollars, exactly the amount locked in by the forward. The rate move never reaches profit early; it appears in cost of sales when the inventory is sold.
Discontinuing and risks
A company must stop hedge accounting if the relationship no longer meets the criteria, the instrument expires or is sold, or the forecast transaction is no longer expected to occur. Amounts already in the reserve stay there if the cash flows are still expected; otherwise they go to profit. Auditors pay close attention to the "highly probable" claim, since repeated failure of forecast transactions can cast doubt on future designations. The derivative also brings counterparty risk and margin calls that affect liquidity even when the accounting is smooth, so cash flow hedges reduce earnings volatility rather than eliminate every kind of interest rate risk or price risk. Companies sometimes rely instead on a natural hedge, such as matching revenues and costs in the same currency.