FX Spot, Forward and Swap Mechanics

Part of: AFP CTP → Corporate Liquidity Management → FX Spot, Forward and Swap Mechanics

1. Why This Topic Matters

Nearly every multinational treasury function touches the foreign exchange (FX) market daily. A U.S. company paying a German supplier in euros, repatriating cash from a Japanese subsidiary, or funding a short-term shortfall in sterling must transact in FX. The AFP's Certified Treasury Professional (CTP) exam tests this area because treasury professionals are expected to:

• Read and interpret FX quotes correctly (base vs. quote currency, bid vs. ask)
• Understand settlement conventions so that cash positioning and liquidity forecasts are accurate
• Price and use outright forwards to hedge known future cash flows
• Use FX swaps to manage liquidity across currencies without taking on exchange-rate risk
• Link FX pricing to interest rates through covered interest rate parity

On the exam, this material typically appears as conceptual questions (which instrument fits a scenario, who bears what risk, which rate the customer receives) and as short calculations (forward rate from interest rates, forward points, premium/discount, cross rates, swap cash flows). Mastering the mechanics gives you reliable points in the Corporate Liquidity Management and Risk Management domains.

2. What It Is: Core Definitions

The FX market. A decentralized, over-the-counter (OTC) market where currencies are exchanged. It is the largest financial market in the world, operating 24 hours a day across global centers (Sydney, Tokyo, London, New York). Participants include banks (market makers), corporations, institutional investors, central banks, and brokers.

Currency pair and quoting convention. A quote such as EUR/USD 1.1000 means one unit of the base currency (EUR, listed first) costs 1.1000 units of the quote or terms currency (USD, listed second). Key conventions:
• Direct quote: the price of one unit of foreign currency in domestic currency (for a U.S. firm, USD 1.1000 per EUR is a direct quote).
• Indirect quote: the amount of foreign currency per one unit of domestic currency (EUR 0.9091 per USD). Direct and indirect quotes are reciprocals.
• Bid/Ask (Offer): quoted from the dealer's perspective. A quote of EUR/USD 1.1000 / 1.1004 means the dealer buys EUR at 1.1000 (bid) and sells EUR at 1.1004 (ask). The corporate customer therefore sells EUR at the bid and buys EUR at the ask. Remember: the bank buys low and sells high; the customer always gets the less favorable side.
• Spread: ask minus bid; the dealer's compensation. Wider for exotic currencies, large sizes, volatile markets, and longer forward tenors.
• Pip (point): the smallest standard price increment, usually the fourth decimal place (0.0001) for most pairs, and the second decimal place (0.01) for JPY pairs.
• Cross rate: a rate between two currencies derived from each currency's rate against a common third currency (often USD). Example: if EUR/USD = 1.1000 and USD/CHF = 0.9000, then EUR/CHF = 1.1000 × 0.9000 = 0.9900.

Spot transaction. An agreement to exchange two currencies at the current market (spot) rate with settlement normally on T+2 (two business days after trade date). Notable exception: USD/CAD typically settles T+1. Spot deals are used for immediate payments, receipts, and conversions. Because settlement is two days out, treasury must include pending spot deals in the daily cash position and manage settlement risk (the risk of paying one currency and not receiving the other, historically called Herstatt risk, mitigated today by CLS Bank's payment-versus-payment settlement).

Outright forward. A binding OTC contract to exchange a specified amount of one currency for another at a rate fixed today (the forward rate) for settlement on a specified future date beyond spot (e.g., 1, 3, 6, 12 months, or any broken date). No cash changes hands at inception (apart from possible credit arrangements). Features:
• Customized amount and date; counterparty (credit) risk to the bank
• Locks in a rate, eliminating both downside risk and upside opportunity (unlike an option)
• Variants: window forward (delivery any time within a date range), non-deliverable forward (NDF) for restricted currencies (BRL, CNY onshore, INR, KRW) where only the net difference is cash-settled in USD, and forward-forward agreements
• Compared with exchange-traded futures: forwards are flexible but carry counterparty risk; futures are standardized, margined, and marked to market daily.

Forward premium and discount. If the forward rate for the base currency is higher than spot, the base currency trades at a forward premium; if lower, at a forward discount. The driver is the interest rate differential, not an expectation of where the rate will go. The currency with the lower interest rate trades at a forward premium; the currency with the higher interest rate trades at a forward discount.

Forward points (swap points). The difference between the forward rate and spot rate, quoted in pips. Dealers quote forward points rather than full forward rates. Convention: if the points are quoted ascending (e.g., 48/52) the base currency is at a premium and you add the points to spot; if quoted descending (e.g., 52/48) the base currency is at a discount and you subtract. Either way, the resulting forward bid/ask spread is wider than the spot spread.

FX swap. A single transaction with two legs: a spot exchange of two currencies and a simultaneous, offsetting forward exchange of the same two currencies (typically the same principal in one currency). Example: sell EUR 10 million spot for USD and buy EUR 10 million back three months forward. The swap is effectively a collateralized loan: you temporarily borrow one currency and lend another. The cost is embedded in the forward points, which reflect the interest differential. Treasury uses FX swaps to:
• Fund a temporary shortfall in one currency using surplus cash in another, without creating open FX exposure
• Roll an existing hedge forward or bring it closer when the underlying cash flow date shifts (rolling or historical rate rollover issues are a compliance red flag)
• Manage intercompany liquidity and cash pooling across currencies

FX swap vs. currency swap. Do not confuse them. An FX swap is short-dated, exchanges principal only (at spot and forward rates), and has no periodic interest payments. A cross-currency (currency) swap is long-dated (years), exchanges principal at inception and maturity at the same spot rate, and includes periodic exchanges of interest payments in the two currencies. The exam likes this distinction.

3. How It Works: Mechanics and Calculations

A. Covered Interest Rate Parity (CIRP) and the forward rate

The forward rate is set so that an investor cannot earn a riskless profit by borrowing in one currency, converting at spot, investing in the other currency, and locking in the reconversion with a forward. The formula for a pair quoted as Base/Quote:

F = S × (1 + i_quote × t/basis) ÷ (1 + i_base × t/basis)

where S is spot, i is the money-market interest rate for the term, t is days, and the basis is the day-count convention (360 for USD, EUR, JPY, CHF; 365 for GBP, AUD, CAD domestic markets, though the exam will usually tell you which to use or use 360).

Worked example 1 - computing a forward rate. EUR/USD spot = 1.1000. Six-month (180-day) USD rate = 5.00%; six-month EUR rate = 3.00%. Both on a 360-day basis.
F = 1.1000 × (1 + 0.05 × 180/360) ÷ (1 + 0.03 × 180/360)
F = 1.1000 × 1.0250 ÷ 1.0150
F = 1.1000 × 1.009852 = 1.1108
Interpretation: EUR (lower rate) trades at a forward premium of about 108 pips (1.1108 − 1.1000). USD (higher rate) trades at a discount. Sanity check: the currency with the higher interest rate must be cheaper forward, otherwise everyone would borrow the low-rate currency, invest in the high-rate currency and lock in the reconversion for a free profit.

Worked example 2 - annualized forward premium/discount. Using the numbers above:
Premium (annualized) = [(F − S) ÷ S] × (360 ÷ t) = [(1.1108 − 1.1000) ÷ 1.1000] × (360/180) = 0.00982 × 2 = 1.96% per year, which approximates the 2% interest differential. The quick approximation on the exam: annualized forward premium ≈ i_quote − i_base.

Worked example 3 - applying forward points. Spot GBP/USD 1.2500 / 1.2504. Three-month points quoted 30 / 34 (ascending, so add).
Forward bid = 1.2500 + 0.0030 = 1.2530; Forward ask = 1.2504 + 0.0034 = 1.2538.
A U.S. company that must buy GBP in three months to pay a supplier deals at the dealer's ask: 1.2538. If the points had been 34 / 30 (descending), subtract: 1.2466 / 1.2474.

B. Hedging a transaction exposure with an outright forward

Scenario: A U.S. importer owes EUR 2,000,000 in 90 days. Spot EUR/USD = 1.1000; the 90-day forward ask = 1.1050.
• Risk: if EUR strengthens, the USD cost rises.
• Action: buy EUR forward (sell USD forward) at 1.1050.
• Locked-in cost: 2,000,000 × 1.1050 = USD 2,210,000, regardless of where spot is in 90 days.
• If spot in 90 days is 1.1500, the hedge saved USD 90,000 versus unhedged; if spot is 1.0800, the company pays USD 50,000 more than it would have unhedged - that is the opportunity cost of a forward versus an option.

Mirror case: a U.S. exporter expecting a EUR receivable would sell EUR forward at the dealer's bid.

C. Mechanics of an FX swap

Scenario: A U.S. parent has surplus USD 11,000,000 for three months and its U.K. subsidiary needs GBP for 90 days. Rather than lend across borders unhedged, treasury executes a swap:
• Near leg (spot): sell USD 11,000,000, buy GBP at spot 1.2500 = GBP 8,800,000.
• Far leg (forward): sell GBP 8,800,000, buy USD at the 90-day forward of 1.2466 = USD 10,970,080.
• Net: the company gives up USD 29,920 over the period. This equals the interest differential embedded in the forward points (GBP rates higher than USD rates in this example, so GBP is at a discount and holding GBP for the period costs you the differential). The company has had use of GBP for three months with no open FX exposure.

Key features to remember: a swap has one spot rate and one forward rate, is priced on the forward points (the swap rate), is not a speculative position, and does not hedge economic or translation exposure - it manages liquidity and timing.

D. Rolling a hedge with a swap

If a hedged EUR receivable originally expected on June 30 slips to September 30, the company has a forward to sell EUR on June 30 with no EUR to deliver. Solution: enter an FX swap - buy EUR spot (to settle the maturing forward) and sell EUR three months forward. The result is a new hedge date with the economic effect of the original rate preserved, adjusted by the swap points. Note: rolling at the original historical rate instead of market rates can hide losses and is restricted or prohibited by many banks and policies.

E. Cross rates and triangulation

Given USD/JPY = 150.00 and EUR/USD = 1.1000, EUR/JPY = 1.1000 × 150.00 = 165.00. When both quotes have USD as the base (e.g., USD/CHF and USD/JPY), divide one by the other to get the cross. Always check that the units cancel correctly: (USD/JPY) × (EUR/USD) = EUR/JPY because USD cancels.

4. Common Treasury Applications Tested on the CTP

• Transaction exposure hedging: forwards lock in the home-currency value of known foreign-currency payables and receivables.
• Cash positioning: spot deals settling T+2 must be forecast; a deal done Friday settles Tuesday.
• Cross-currency liquidity: swaps move cash between currencies without creating exposure, supporting notional pooling and in-house banks.
• Netting: multilateral netting reduces the gross volume of spot deals, cutting spreads and settlement risk.
• Hedge accounting: forwards qualify as hedging instruments under ASC 815 / IFRS 9 when properly designated and documented; the forward points may be excluded from hedge effectiveness testing.
• Counterparty and settlement risk: ISDA master agreements, credit lines, CLS settlement, and limits on tenor and counterparty exposure.

5. Exam Tips: Answering Questions on FX Spot, Forward and Swap Mechanics

Tip 1 - Identify the base currency first. In EUR/USD 1.1000 the base is EUR. The rate tells you how much USD one EUR costs. Every premium/discount statement and every calculation depends on getting this right. If a question says 'the dollar is at a forward discount against the euro,' it means EUR/USD forward is above spot.

Tip 2 - Take the dealer's perspective on bid/ask. The quote is what the bank does. The bank buys the base currency at the bid and sells it at the ask. The customer gets the opposite side. Shortcut: the customer always receives the worse rate - lower when selling base currency, higher when buying it. If your answer gives the customer the better rate, it is wrong.

Tip 3 - Lower interest rate = forward premium. This is the single most tested relationship. The high-rate currency must trade at a discount to offset its interest advantage. If the question gives you interest rates and asks whether a currency is at a premium or discount, you do not even need to calculate - compare the rates.

Tip 4 - Memorize the CIRP formula with 'quote on top.' F = S × (1 + i_quotet) / (1 + i_baset). Because the spot rate is in quote-currency units, the quote currency's interest factor goes in the numerator. Do a sanity check after calculating: did the higher-rate currency weaken forward?

Tip 5 - Watch the day count and time fraction. Convert days to a fraction of the year (t/360 or t/365 as given). A common error is using the annual rate for a 90-day forward without scaling. Also check whether rates are given as annual percentages or as period rates.

Tip 6 - Ascending points add, descending points subtract. If the forward point quote gets bigger from left to right (bid points smaller than ask points), add to spot. If it gets smaller, subtract. The forward spread will always be wider than the spot spread - use this to verify your arithmetic.

Tip 7 - Know the settlement dates. Spot = T+2 business days (USD/CAD = T+1). 'Forward' means any value date beyond spot. Questions on cash forecasting often hinge on when funds actually move.

Tip 8 - Match the instrument to the exposure. Known amount and date with no desire for upside: outright forward. Uncertain timing within a range: window forward. Restricted currency: NDF. Temporary need for one currency while holding another, or shifting a hedge date: FX swap. Long-dated debt in a foreign currency with interest payments: cross-currency swap. Want protection but also upside: option (costs a premium). Standardized, margined, exchange-traded: futures.

Tip 9 - FX swap is not a currency swap. If the question mentions periodic interest exchanges or multi-year tenors, it is a cross-currency swap. If it describes a spot leg plus an offsetting forward leg with principal only, it is an FX swap. An FX swap creates no net FX exposure; it is a funding/liquidity tool.

Tip 10 - Forward rates are not forecasts. The forward rate is a no-arbitrage price derived from interest differentials. Any answer choice stating that a forward premium 'reflects the market expectation that the currency will appreciate' is a classic distractor.

Tip 11 - Hedge direction follows the cash flow. Payable in foreign currency: buy the foreign currency forward. Receivable in foreign currency: sell it forward. If the question frames the exposure in terms of the home currency ('the firm will need to sell USD'), translate it back into the foreign currency to avoid reversing the trade.

Tip 12 - Use the approximation when answer choices are far apart. Annualized forward premium ≈ interest differential. If EUR rates are 3% and USD rates are 5%, EUR is at roughly a 2% annual premium in EUR/USD. For a six-month tenor, that is about 1%, or about 110 pips on a 1.1000 spot. This lets you eliminate wrong answers quickly and check your precise calculation.

Tip 13 - Read the units in the answer choices. Many wrong answers are simply the reciprocal of the right one (indirect vs. direct quote) or the result of multiplying when you should divide for a cross rate. Confirm that the currency units cancel properly.

6. Practice Questions

Q1. USD/JPY spot is 150.00. Three-month USD rates are 5.0% and JPY rates are 0.5%, 90 days, 360-day basis. What is the 3-month forward, and is the dollar at a premium or discount?
Solution: Base = USD, quote = JPY. F = 150.00 × (1 + 0.005 × 90/360) / (1 + 0.05 × 90/360) = 150.00 × 1.00125 / 1.0125 = 150.00 × 0.98889 = 148.33. The dollar (higher rate) trades at a forward discount; the yen is at a premium.

Q2. A U.S. company will receive GBP 5,000,000 in six months. Spot GBP/USD is 1.2500/1.2505 and the six-month forward points are 45/40. What USD amount can it lock in?
Solution: Points are descending, so subtract. The company sells GBP, so it deals at the dealer's bid: 1.2500 − 0.0045 = 1.2455. Proceeds = 5,000,000 × 1.2455 = USD 6,227,500.

Q3. A treasurer holds surplus EUR for two months but needs USD for the same period and wants no exchange-rate exposure. Which instrument is most appropriate?
Solution: An FX swap - sell EUR / buy USD spot and buy EUR / sell USD two months forward. An outright forward alone would leave the near-term USD need unmet; a cross-currency swap is for long-dated exposures with interest exchanges; a spot sale alone would leave open exposure when EUR is needed back.

Q4. Which statement is correct? (a) A forward premium indicates the market expects the currency to appreciate. (b) The currency with the higher interest rate trades at a forward premium. (c) Forward points are derived from the interest differential between the two currencies. (d) An FX swap exposes the company to exchange-rate risk on the full notional.
Solution: (c). (a) confuses parity with forecasting, (b) reverses the relationship, and (d) is false because the two legs offset.

7. Quick Reference Summary

• Quote A/B = units of B per one A; A is the base.
• Dealer buys base at bid, sells at ask; customer gets the worse side.
• Spot settles T+2 (USD/CAD T+1).
• Forward = spot ± forward points; points come from interest differentials (CIRP).
• Low-rate currency = forward premium; high-rate currency = forward discount.
• F = S × (1 + i_quote t)/(1 + i_base t).
• Ascending points add; descending points subtract.
• Outright forward hedges a known future cash flow; locks in rate, gives up upside.
• FX swap = spot leg + offsetting forward leg; liquidity tool, no net FX exposure; principal only, short-dated.
• Cross-currency swap = long-dated, exchanges principal and periodic interest.
• Forward rates are no-arbitrage prices, not forecasts.

Work through several calculations until the direction of premium/discount and the bid/ask side become automatic. On the CTP exam, those two instincts, combined with a reliable CIRP formula, will handle the large majority of FX mechanics questions.