Cryptocurrency differs from government currency in almost every way that touches your money: a central bank manages the dollar’s supply while software rules govern crypto, the dollar is legal tender and crypto is not, bank deposits carry federal insurance and crypto holdings carry none, and the IRS taxes crypto as property rather than as money. Those differences change what each is useful for, what happens when something goes wrong, and what you owe at tax time.
Who Controls the Supply
The U.S. dollar is managed by the Federal Reserve, which expands or contracts the money supply in response to conditions like employment and inflation, primarily by buying or selling government securities on the open market.1Board of Governors of the Federal Reserve System. Monetary Policy: What Are Its Goals? How Does It Work? There is no hard cap on how many dollars can exist. The number grows or shrinks based on policy.
Cryptocurrency works from the opposite direction. Most protocols encode supply rules directly into the software. Bitcoin, for example, has a maximum supply of 21 million coins, and the rate at which new coins enter circulation halves roughly every four years. No person or agency can change that schedule. The tradeoff is that no one can adjust it in a downturn either.
Legal Tender Status
Federal law makes U.S. coins and currency legal tender for all debts, public charges, taxes, and dues.2Office of the Law Revision Counsel. 31 USC 5103 – Legal Tender A creditor generally must accept dollars offered to pay an existing debt.
Cryptocurrency has no legal tender status. The IRS treats digital assets as property, similar to stocks or real estate, rather than as currency.3Internal Revenue Service. Digital Assets Federal regulators have debated whether specific digital assets qualify as securities or commodities, but none classify them as legal tender. No business is required to accept crypto as payment; whether a store takes it comes down to a private agreement between you and that business.
What Protects You If Something Goes Wrong
Dollars held at a bank come with several layers of protection. The FDIC insures deposits up to $250,000 per depositor, per insured bank, for each account ownership category.4FDIC. What We Do The Electronic Fund Transfer Act caps your liability for unauthorized electronic transactions at $50 if you report the problem promptly, or $500 if you report within 60 days.5Office of the Law Revision Counsel. 15 USC 1693g – Consumer Liability Your bank can also reverse fraudulent charges and freeze suspicious activity.
Cryptocurrency has none of that. Digital asset holdings are not covered by FDIC insurance or SIPC protection regardless of where you store them. Blockchain transactions are irreversible. Send crypto to the wrong address or fall for a scam, and there is no bank to call and no chargeback process. Lose the private key that controls your wallet and the funds are gone for good. An estimated 3 to 4 million Bitcoin are believed to be permanently inaccessible because of lost passwords and misplaced recovery phrases. Security is entirely on you.
Price Stability and Purchasing Power
The Federal Reserve targets an inflation rate of 2 percent per year, measured by the annual change in the price index for personal consumption expenditures.6Board of Governors of the Federal Reserve System. Why Does the Federal Reserve Aim for Inflation of 2 Percent Over the Longer Run? The dollar is designed to lose a small, predictable amount of purchasing power each year. That predictability is what makes it usable as a store of value for everyday planning.
Cryptocurrency has no stabilizing mechanism. Over the past decade, Bitcoin has been roughly four times more volatile than global stock markets. Its price has gone through 14 separate declines of 20 percent or more, and its five worst drawdowns averaged a 57 percent loss. Volatility has moderated somewhat after the approval of spot Bitcoin ETFs in 2024, but rolling one-year volatility still runs more than double that of broad equities. Purchasing power can swing sharply in days or hours.
How Taxes Work
Dollar transactions follow familiar tax rules. Wages are taxed as ordinary income, bank interest shows up on a 1099-INT, and spending dollars on goods and services does not trigger a taxable event.
Crypto is different because the IRS treats it as property. Almost every transaction can create a taxable event.3Internal Revenue Service. Digital Assets Selling crypto for more than you paid triggers capital gains tax. Trading one cryptocurrency for another is a taxable exchange. Even buying a cup of coffee with Bitcoin is technically a sale of property that may produce a gain or loss you have to report.
The rate depends on how long you held the asset. Short-term gains on crypto held for one year or less are taxed at your ordinary income tax rate. Long-term gains on crypto held for more than one year are taxed at 0, 15, or 20 percent, depending on your taxable income.7Internal Revenue Service. Topic No. 409 – Capital Gains and Losses Crypto received through mining, staking, or as payment for services is taxed as ordinary income at its fair market value on the day you receive it.
Your federal return includes a question asking whether you received, sold, exchanged, or otherwise disposed of any digital assets during the tax year. You must answer it regardless of whether you owe tax.3Internal Revenue Service. Digital Assets Beginning with transactions on or after January 1, 2025, cryptocurrency brokers and exchanges are required to report your sales on Form 1099-DA, and brokers must report cost basis on certain transactions starting January 1, 2026.8Internal Revenue Service. Frequently Asked Questions About Broker Reporting Brokers cannot rely on acquisition information from a previous broker to report basis; they can use it only to determine which units were sold. If you moved crypto between exchanges, you may need to track and report your own cost basis.
How Transactions Get Verified
When you swipe a card or send a bank transfer, a private financial institution checks its own records, confirms the funds, and approves the transaction. Card payments clear in seconds. If something goes wrong, the bank can reverse the transaction, freeze funds, or mediate a dispute.
Cryptocurrency transactions are verified by a distributed network of computers rather than any single company. Once confirmed, a transaction becomes a permanent, publicly visible entry that no one can alter or reverse. The tradeoff is speed: Bitcoin’s base layer handles roughly 5 to 7 transactions per second, a fraction of what traditional payment networks process. Layer-two solutions like the Lightning Network aim to increase throughput by handling smaller transactions off the main blockchain, at the cost of added complexity. For large or infrequent transfers, the base layer works fine. For everyday purchases, the gap is significant.
Identity and Privacy
Opening a bank account requires you to verify your identity with government-issued ID and proof of address. Banks follow Know Your Customer rules and anti-money laundering regulations, report suspicious activity, and tie every transaction to your verified identity.
Cryptocurrency was originally designed to allow transactions without revealing personal information. On public blockchains like Bitcoin, transactions are recorded under wallet addresses rather than names. Anyone can view transaction amounts and wallet activity on the public ledger, but linking a wallet to a real person takes additional information. That makes crypto pseudonymous rather than truly anonymous.
Much of that privacy has eroded in practice. Centralized cryptocurrency exchanges operating in the United States must register as money service businesses with FinCEN and follow the same anti-money laundering and Know Your Customer requirements that apply to traditional financial institutions.9Financial Crimes Enforcement Network (FinCEN). Advisory on Illicit Activity Involving Convertible Virtual Currency If you buy crypto through a major exchange, your identity is verified and your transactions are reportable to the IRS. Peer-to-peer transactions and self-hosted wallets offer more privacy, but blockchain analysis tools have made it increasingly possible for law enforcement to trace transactions back to individuals.
Where the Rules Are Headed
The regulatory framework for cryptocurrency is still developing. A central question has been whether digital assets should be regulated as securities (overseen by the SEC) or commodities (overseen by the CFTC). The Digital Asset Market Clarity Act of 2025 aims to resolve that by defining digital commodities based on the characteristics of the underlying blockchain network.10House Financial Services Committee. Digital Asset Market Clarity (CLARITY) Act of 2025
Congress has also moved to regulate stablecoins, digital assets designed to hold a fixed value relative to the dollar. The GENIUS Act established a federal framework requiring stablecoin issuers to maintain customer identification programs, comply with anti-money laundering rules, and have the technical capability to block or freeze transactions that violate federal or state law.11Congress.gov. S.1582 – GENIUS Act The direction is toward bringing crypto closer to the standards that govern traditional finance, though significant gaps remain. Rules for broker reporting, consumer disclosures, and exchange oversight continue to change. If you hold or trade digital assets, keeping up with those changes is part of the job.