Exchange Rates and Export Quoting — Why Customs Rates and Market Rates Differ

Export quotes are usually written in a foreign currency like USD, but what actually lands in your company's bank account is local currency. If the exchange rate moves between the quote date and the date you're actually paid, the contract figure stays the same but the local-currency amount you receive doesn't. This guide covers the exchange rate distinctions every export team needs to know, and basic ways to manage FX risk.

Customs notified rate vs. market rate — two rates, two purposes

This is one of the most commonly confused distinctions in export operations.

• Customs notified rate: the rate customs authorities publish (weekly, in Korea's case) to calculate the dutiable value on import/export declarations. This is an administrative rate for customs valuation — it's not the rate used for actual bank settlement.
• Market rate (bank buying/selling rate, etc.): the rate actually applied when converting or settling foreign currency, which moves in real time.

In short: use the customs notified rate to work out how much duty you'll owe, and the market rate to work out how much local currency you'll actually receive. Our Exchange Rate Calculator is built on the customs notified rate, so it's the right tool for customs valuation — while the exchange rate widget on our Logistics Briefing tracks real-time market rate movement instead. Use each for its intended purpose.

FX risk between the quote date and the payment date

Export contracts typically have weeks to months between the quote date and actual payment collection. The exchange rate movement across that window is your FX risk.

• The contract amount in the agreed currency (USD, etc.) is fixed, but its local- currency equivalent depends on the rate at the time of settlement.
• A favorable rate move is a windfall; an unfavorable one can erase the margin you planned for at the time of quoting.

Basic ways to manage FX risk

• State a quote validity period: including a clause like "this quote is valid for N days from issuance and subject to renegotiation on significant exchange rate movement" separates long-term FX risk from the contract itself.
• Forward contracts: a financial instrument that locks in a future exchange rate today — if your payment date is fixed, a forward contract with your bank can eliminate the FX movement entirely.
• Diversify settlement currencies: rather than concentrating contracts in a single currency, spreading them across major trading partners' currencies reduces the impact any one currency's sharp move has on total revenue.
• Monitor the trend during negotiation: if you're still negotiating a contract, tracking the recent exchange rate trend and adjusting your quote accordingly is the safer path.

Practical checklist

• Always use the customs notified rate calculator for customs valuation and duty calculations — using the bank market rate instead can create a mismatch with your actual declared value.
• Always state a validity period and an exchange rate clause on your quotes.
• If settlement is months away, consider a forward contract or other hedging instrument.
• Check the 30-day exchange rate trend chart on our Logistics Briefing to time your quote.