Cryptocurrency differs from government currency in almost every way that touches your money: who controls the supply, whether anyone is required to accept it, what protections you get if something goes wrong, how transactions clear, and how the IRS taxes what you do with it. U.S. dollars are issued by a central bank, backed by federal law, and insured when held in a bank account. Cryptocurrency is created by software, secured by cryptography, and sits outside most of the safety nets that cover traditional accounts. The practical consequences show up when you try to spend it, lose it, or report it on a tax return.
Who Controls the Supply
The U.S. dollar’s supply is managed by the Federal Reserve, which adjusts how much money circulates based on conditions like employment and inflation. The Fed does this mainly by buying or selling government securities on the open market, adding or removing money from the banking system.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 supply grows or shrinks based on policy choices.
Cryptocurrency takes the opposite approach. Most protocols use rules baked into their software to control how new units enter circulation. Bitcoin has a maximum supply of 21 million coins, and the rate at which new coins are created automatically halves roughly every four years. The schedule is set by the code rather than by any human decision-maker, and participants who validate transactions receive newly created coins as a reward.
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.2Board 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. If you hold dollars in a savings account, you can reasonably estimate what they will buy next month.
Cryptocurrency has no such stabilizing mechanism. Over the past decade, Bitcoin has been roughly four times more volatile than global stock markets. Its price has experienced 14 separate declines of 20 percent or more, and its five worst drawdowns averaged a 57 percent loss. Even after spot Bitcoin ETFs were approved in 2024, rolling one-year volatility still runs more than double that of broad equities. The purchasing power of cryptocurrency can swing sharply in days or hours, which makes it unreliable as a stable store of value for routine spending.
Does Anyone Have to Accept It
Federal law designates U.S. coins and currency, including Federal Reserve notes, as legal tender for all debts, public charges, taxes, and dues.3Office of the Law Revision Counsel. 31 USC 5103 – Legal Tender A creditor generally must accept dollars when you offer them 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.4Internal Revenue Service. Digital Assets No business is required by law to accept it. Whether you can spend crypto at a particular store depends entirely on a private agreement between you and that business.
What Happens If Something Goes Wrong
Dollars held in a bank account come with several layers of protection. The FDIC insures deposits up to $250,000 per depositor, per insured bank, for each account ownership category.5FDIC. What We Do If your bank fails, the federal government covers your loss up to that limit. 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.6Office of the Law Revision Counsel. 15 USC 1693g – Consumer Liability Your bank can also reverse fraudulent charges and freeze suspicious activity.
Cryptocurrency offers none of this. Digital asset holdings are not covered by FDIC insurance or SIPC protection, regardless of where you store them. Transactions recorded on a blockchain are irreversible. Send crypto to the wrong address or fall for a scam, and there is no bank to call and no chargeback to initiate. Lose the private key that controls your wallet and the funds are gone permanently. An estimated 3 to 4 million Bitcoin are believed to be permanently inaccessible because of lost passwords and misplaced recovery phrases. The burden of security falls entirely on you.
How Each Is Taxed
When you earn, spend, or save in dollars, the tax rules are familiar. Wages are taxed as ordinary income, bank interest shows up on a 1099-INT, and spending dollars at a store does not trigger a taxable event.
Cryptocurrency works differently. Because the IRS classifies digital assets as property, almost every transaction involving crypto can create a taxable event.4Internal Revenue Service. Digital Assets Selling crypto for more than you paid produces a capital gain. 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.
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 income tax 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 any tax.4Internal Revenue Service. Digital Assets For transactions on or after January 1, 2025, cryptocurrency brokers and exchanges are required to report 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, only to determine which units were sold. If you have moved crypto between exchanges, you may need to track and report your own cost basis.
How Transactions Clear
When you swipe a card or send a bank transfer, a private financial institution checks its internal records, confirms you have the funds, and approves the transaction in seconds. If something goes wrong, the bank can reverse the transaction, freeze funds, or mediate a dispute. Visa’s network can process up to 83,000 transaction messages per second.9Visa. Inside Visa’s Engine of Global Commerce
Cryptocurrency transactions are verified by a distributed network of computers rather than a single company, and once confirmed, a transaction becomes a permanent, publicly visible entry that no one can alter. Bitcoin’s base layer handles roughly 5 to 7 transactions per second, a small fraction of what traditional payment networks process. Secondary systems aim to increase throughput for smaller payments, but they add complexity. For large or infrequent transfers, the base layer works fine. For everyday purchases, the gap matters.
Identity and Privacy
Opening a bank account requires government-issued identification, proof of address, and sometimes other documentation. Banks follow Know Your Customer rules and anti-money laundering regulations and report suspicious activity to the federal government. Every transaction is tied to your verified identity and visible to your bank.
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 connecting a wallet address to a real person requires 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 rules that apply to traditional financial institutions.10Financial 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.
How You Hold It
Government money comes in two forms: physical cash you can hold and electronic balances stored in bank accounts. Paper bills and coins are produced by government agencies, and your electronic balance is maintained in your bank’s database. You get at your money either by holding the cash or by authenticating with your bank through a PIN, password, or card.
Cryptocurrency has no physical form. It exists only as entries on a distributed digital ledger. You interact with your crypto through a digital wallet that stores the private cryptographic key needed to authorize transactions. Hot wallets stay connected to the internet for convenience; cold wallets keep the key on an offline device for better security. The wallet does not hold coins the way a leather wallet holds bills. It holds the credentials that prove your ownership of entries on the blockchain. Lose those credentials and no institution can help you recover the funds.
Where the Rules Are Heading
The regulatory framework for cryptocurrency in the United States is still developing. One central question has been whether digital assets should be regulated as securities under the SEC or commodities under the CFTC. The Digital Asset Market Clarity Act of 2025 aims to resolve this by defining digital commodities based on the characteristics of the underlying blockchain network.11House Financial Services Committee. Digital Asset Market Clarity (CLARITY) Act of 2025
Congress has also moved to regulate stablecoins, digital assets designed to maintain a fixed value against the dollar. The GENIUS Act established a federal framework requiring stablecoin issuers to maintain customer identification programs, follow anti-money laundering rules, and have the technical capability to block or freeze transactions that violate federal or state law.12Congress.gov. S.1582 – GENIUS Act Rules for broker reporting, consumer disclosures, and exchange oversight continue to change, and keeping up with them matters if you hold or trade digital assets.