Keeping part of your savings in dollars as USDC

This page explains how holding dollar value as USDC works and what can go wrong. It is not investment advice, and it does not recommend holding dollars or any crypto-asset.

The situation

Elena is a pharmacist in Ruse with about EUR 20,000 in savings, all in euros at one bank. Part of her family income comes from her husband's work for a US company, paid in dollars, and they travel to see relatives in Canada most summers. She has been reading that some people keep a slice of their savings in another currency so that not everything depends on one.

A colleague tells her she holds "digital dollars" in an app. Elena is curious but careful. She wants to understand what USDC actually is, whether it is safer or riskier than a dollar account at a bank, what it costs to get in and out, and what the tax office would think.

Where the cost or risk really comes from

Holding USDC is not holding cash under a mattress, and it is not a bank deposit either. The risks come from several different places:

• The exchange rate. Elena lives on euros. If she moves EUR 5,000 into dollars and the dollar weakens against the euro, she gets fewer euros back, even though USDC kept its dollar value exactly. This is usually the largest source of gains and losses, and it has nothing to do with crypto.
• The issuer. USDC is issued by Circle, which says it backs every token with cash and short-term US government debt held at regulated financial institutions, and publishes monthly attestations. Holders depend on those reserves being there and on Circle redeeming at par.
• Depeg. On exchanges, the price of a stablecoin can move away from 1.00 for a while when there is stress at the issuer or its banks. Redemption at par is what pulls it back, but for a short period a sale could return less than a dollar per token.
• No deposit guarantee. Bank deposits in the EU are covered by deposit guarantee schemes up to a limit. USDC is not.
• Self-custody responsibility. In a self-custody wallet, nobody else can move your money, and nobody can undo your mistakes. Phishing, a compromised email or a transfer to a wrong address are the everyday ways people lose funds.
• The round-trip cost. Getting into and out of USDC has fees at both ends. For small or short-term amounts, the fees can outweigh any currency benefit.
• Tax. Selling USDC for euros is a sale of a crypto-asset under Bulgarian law. A gain caused only by the exchange rate is still a gain.

How to handle it

1. Decide the purpose before the amount. Are you matching dollar costs, spreading currency risk, or speculating on the dollar? The answer changes how much and for how long. If you are unsure, speak to a licensed financial adviser.
2. Understand what you would hold. Read what a stablecoin is and Circle's reserve reports. Compare USDC with other stablecoins in USDC vs USDT.
3. Compare the ways to hold dollars. A dollar deposit at a bank is covered by the deposit guarantee scheme up to its limit, but banks apply their own conversion rates and may charge account fees. A stablecoin on a large exchange is held by the exchange for you. USDC in a self-custody wallet, such as the xChange.bg wallet funded from your EUR IBAN at 1.5%, is held by you.
4. Secure access before you move money. Use an email account with strong protection, and treat any message asking for a code or a sign-in link as suspicious.
5. Record the euro cost. Note the date and the euros you paid for each purchase. You need it for the tax calculation when you sell.
6. Plan the way out. When you need euros, pay out to your own bank at 1.25% with the send to bank payout. Check the rate the app shows against the ECB reference rate before you confirm.
7. Review, do not watch. Checking the EUR/USD rate every day invites rash decisions. Review your plan on a schedule you set in advance.

Setup checklist

• The purpose written down in one sentence
• An amount you can leave untouched through a bad year for the dollar
• Circle's latest reserve report read
• Email account secured, no one-time codes shared with anyone
• Euro cost of each purchase recorded with its date
• Your own IBAN saved for payouts and checked
• A note in your tax calendar: sales are declared in Annex 5 by 30 April of the next year

Worked example

Elena moves EUR 5,000 into USDC through her xChange.bg EUR IBAN. On the day, the illustrative rate is USD 1.15 per euro. A year later she converts everything back. The example shows two possible rates on that day. Real rates will differ.

The fees, EUR 75 in and USD 70.80 out, are fixed and known in advance. The exchange rate decides whether the whole exercise ends in a gain or a loss, and by how much. In the first case, the EUR 326.62 gain enters her annual calculation for crypto-assets: after the 10% deduction, the tax at 10% would be about EUR 29.40 if it were her only deal of the year. In the second case the loss can be netted against other gains of the same year. See the crypto tax guide. This is not tax advice.

What this is based on

The description of USDC and its reserves comes from Circle's USDC and transparency pages. ESMA's MiCA pages explain the EU framework for stablecoins, under which a token referencing one official currency is an e-money token. The note on self-custody relies on Privy's documentation of how its wallet keys are protected. Exchange rates are illustrative; the ECB publishes euro reference rates each working day. The tax treatment follows Article 33, paragraph 3 and Article 48, paragraph 1 of the Personal Income Tax Act. Fees are from the xChange.bg pricing page. The story and figures are illustrative, and nothing here is a recommendation to buy, hold or sell any asset.