Hryvnia or dollars: the currency of a goal

A goal priced in another currency starts with a conversion at today's exchange rate, but that is only a snapshot. The course fee is 1,200 EUR; at 50.9743 UAH per euro (29 September 2026) that is 1,200 × 50.9743 = 61,169 UAH.

That hryvnia figure is what the course costs today. The bill itself comes in July 2027, and the euro price stays 1,200 whatever happens, while the hryvnia equivalent moves with the rate. So the conversion answers "what would it cost if I paid now?", not "what must I save?".

For anything you'll pay abroad, the price is anchored in the foreign currency; the hryvnia number is just a translation that will be out of date by the time the bill arrives.

Currency risk is the chance that a change in the exchange rate leaves your savings short in the currency you'll actually spend. It bites whenever the goal's currency differs from the savings' currency.

Dana saves 61,169 UAH for a 1,200 EUR course. If the euro rises 10% against the hryvnia by July, the course costs 1,200 × 50.9743 × 1.10 = 67,286 UAH — 6,117 more than she set aside, exactly 10% of the original. She'd have to find the gap or go short.

Had she saved in euros, the 1,200 would still be 1,200 no matter the rate: the risk disappears because the goal and the savings share a currency. That is the whole case for matching them — not a forecast about the euro, just removing a swing she cannot predict.

Swapping currencies is never free: a bank sells a currency dearer than it buys it back, and the gap (the spread) is a cost you pay the moment you exchange, before any rate has moved.

Say the bank sells dollars at 45.20 and buys at 44.60. Change 150,000 UAH to dollars: 150,000 / 45.20 = 3,318.58 USD. Sell them straight back: 3,318.58 × 44.60 = 148,008.67 UAH. You've lost 1,991 UAH — about 1 − 44.60 / 45.20 = 1.33% — with nothing to show for it.

So moving savings into another currency and back costs real money each way. For a goal already in your own currency, that cost is pure loss; it only makes sense when the goal itself is in the other currency.

There is one rule for the currency of savings: match the currency the bill will come in, not the currency people trust most.

• Builders paid in hryvnias → save in hryvnias.
• A course fee fixed at 1,200 EUR → save in euros; the price can't drift against you.
• Imported appliances repriced when the euro moves → treat their share of the budget as euro-linked, or buy them early.
• An emergency fund, whose bills nobody can predict → a mix of currencies is honest about that.

The mistake is to pick a currency by reputation ("the hryvnia always falls") instead of by the goal. A goal with a known currency has a known answer; a goal that genuinely mixes currencies gets a matching split, and only a truly unknown bill justifies hedging with a mix.

Holding dollars for a hryvnia-priced goal does not remove exchange-rate risk — it adds it. The bill is in hryvnias, so if the hryvnia holds or strengthens, your dollars buy fewer hryvnias than you planned, and you fall short.

Two costs pile on top. Exchanging has a spread both ways, about 1.33% at 45.20 / 44.60. And dollar deposits earn little — around 1% a year in late September 2026 — against roughly 13–14% on hryvnia ones, before the same 23% tax on interest.

So dollars for a hryvnia goal only win if the hryvnia falls enough to beat the spread and the lost interest. That is a bet on the exchange rate, in both directions, not the safe default it looks like. Dollars earn their place when the bill itself is in dollars, or when the bill is genuinely unknown, like an emergency fund.