How Can a Family Manage Currency Exposure Across Its Global Assets?

Measure how exchange rate movements affect the family's assets, liabilities, income, and spending. A global portfolio can carry currency risk even when each investment appears sound on its own. The family needs a shared view of exposure before deciding whether and how to reduce it.

Map the Exposures

List holdings and obligations by currency, including foreign assets and expected income. Include debt and planned transfers. Distinguish transaction exposure, where a payment or receipt changes value before settlement, from the effect of currency changes on the home-currency value of foreign investments. Economic exposure also matters: currency moves can affect the underlying business or asset.

The Rainmaker Handbook describes tools businesses use to manage foreign exchange exposure, such as forwards and options. It also discusses swaps and matching assets with liabilities in different currencies. A family portfolio may have different needs from a multinational company, so use the exposure map to define the problem before choosing a tool. See deciding whether to hedge currency risk.

Set a Policy Tied to Family Needs

Decide how much currency movement the family can accept in relation to its spending and investment horizons. If liabilities are in one currency and assets are in another, a currency move could affect the family's ability to meet those obligations. Matching some assets and liabilities by currency can reduce that mismatch. Diversifying currency exposure can also avoid reliance on a single currency, though it does not remove risk.

Write down which exposures will be hedged and who can approve a hedge. Specify the permitted instruments. A hedge can reduce one risk while adding costs and operational requirements, so its purpose should be clear. The portfolio models framework can help connect currency decisions to the whole allocation.

Coordinate Specialists and Reporting

Review foreign currency positions alongside cash management and investment decisions. Include expected transfers in the review. Track both the underlying exposure and any hedge, so the family can see what remains unprotected. Keep the process simple enough that staff can monitor it consistently. A specialist may help with complex exposures and execution. They can also advise on cash transfers across countries.

Global tax and legal structures can affect how foreign assets and transactions are handled. Talk with your attorney and CPA about the entities and jurisdictions involved. Discuss the relevant tax treatment with them. The plan for investments across trusts and entities can help coordinate ownership. For decisions about the size and timing of hedges, see the currency hedging question. Review the policy when the family's asset mix, liabilities, or cash needs change.

The diversification of a currency portfolio, whether based on a complex model or gut feeling, is always less risky then holding one currency.

Sources: The Family Office Book, The Rainmaker Handbook. Informational only, not financial, legal or tax advice.