What Is Cash? Definition, Types, and History
By Markets & Investing DeskUpdated Nov 10, 2026
Definition
Cash is money in its most spendable form: banknotes, coins and on-demand balances like checking deposits. Accounting adds very short-term, highly liquid investments as cash equivalents.
Key takeaways
- Under US accounting standards, cash equivalents generally need an original maturity of three months or less.
- Legal tender covers debts already owed; no federal law makes a business accept cash for a new purchase.
- At 3% yearly inflation, $1,000 held in a drawer for five years is worth about $862.61 in real terms.
- US businesses must report cash payments over $10,000 received in one transaction or related transactions.
Cash is money in its most immediately spendable form: physical banknotes and coins, plus balances such as checking deposits that can be used for payment or withdrawn on demand without penalty. In accounting, the term widens slightly to “cash and cash equivalents,” which adds very short-term, highly liquid investments that can be turned into a known amount of cash with almost no risk of a change in value.
What Counts as Cash
Cash on hand (also called cash in hand) is physical money a person or business holds directly: notes in a wallet, coins in a register, a petty cash box.
Cash in bank (or cash at bank) is money held in deposit accounts that can be accessed on demand, mainly checking accounts and similar balances. In bookkeeping it is usually tracked separately from cash on hand and reconciled against bank statements.
Cash equivalents are short-term instruments such as Treasury bills, commercial paper and money market funds. Under US accounting standards, an investment generally qualifies only if it had an original maturity of three months or less when the company bought it. A one-year certificate of deposit does not qualify, even when it is near maturity, if it was purchased with a longer term.
Corporate cash discussions may also mention marketable securities like government bonds or banker’s acceptances. These are liquid, but unless they meet the equivalent test they are reported as short-term investments, not cash.
Cash vs. Money vs. Currency
- Money is anything widely accepted as a medium of exchange, a unit of account and a store of value. It includes cash, but also deposit balances that move electronically and, in broad measures of the money supply, savings deposits and similar balances.
- Currency is the specific monetary unit issued by a country, such as the US dollar. Cash is denominated in a currency, so cash is a form of currency, but a currency also exists as bank entries that are never printed.
In the United States, Federal Reserve notes are printed by the Bureau of Engraving and Printing, coins are minted by the US Mint, and federal law (31 U.S.C. 5103) makes US coins and currency legal tender for all debts. Legal tender status means a creditor cannot refuse it for a debt already owed. No federal statute requires a private business to accept cash for a new purchase, so some stores choose to go card-only unless a state or city law says otherwise.
Cash in Accounting: A Worked Example
On a balance sheet, cash and cash equivalents are the first and most liquid current asset. The cash flow statement then explains how that figure changed over a period, splitting movements into three groups:
- Operating activities: cash from customers minus cash paid for wages, suppliers, rent, interest and taxes.
- Investing activities: buying or selling equipment, property and investments.
- Financing activities: borrowing, repaying debt, issuing shares, buying back stock and paying dividends.
Hypothetical example. A small company holds the following at year end:
| Item | Amount | Counts as cash and cash equivalents? |
|---|---|---|
| Checking account balance | $20,000 | Yes (cash in bank) |
| Register and petty cash | $3,000 | Yes (cash on hand) |
| Treasury bill bought with 60 days to maturity | $50,000 | Yes (equivalent) |
| One-year CD bought 10 months ago | $100,000 | No (short-term investment) |
Reported cash and cash equivalents: $20,000 + $3,000 + $50,000 = $73,000. The CD is still a current asset, but it sits on a separate line.
A Short History of Cash
Cash has taken whatever form a society trusted. Early economies used commodities such as grain, cattle, shells and salt. Metal coins appeared in Lydia (in present-day Turkey) around the 7th century BC, with value tied to the metal itself.
Paper money came later. China issued government paper notes during the Song dynasty, roughly a thousand years ago, and in Europe, Sweden’s Stockholms Banco issued banknotes in 1661. For long stretches, notes were redeemable in gold or silver. That link ended for the US dollar in 1971, when the United States stopped converting dollars into gold for foreign governments.
Today’s cash is fiat currency: coins whose metal is worth little and notes whose value depends on trust in the issuing government and central bank. That gives monetary authorities control over the money supply and, with it, influence over inflation.
Cash and Purchasing Power
A $100 bill is always worth $100 in nominal terms, but what it buys changes. The real value of cash held for a period can be estimated as:
Real value = Nominal amount ÷ (1 + annual inflation rate)^years
Hypothetical example, assuming 3% inflation every year: $1,000 kept in a drawer for five years has a real value of $1,000 ÷ 1.03^5 ≈ $862.61 in today’s dollars. Cash in an interest-bearing account offsets part or all of that loss, depending on the rate.
Cashless Payments and Digital Cash
Checks, debit and credit cards, online banking and phone payments have cut the need to carry physical money. A cashless economy is one in which electronic payments settle most transactions. It lowers the cost of counting, verifying, storing and transporting notes, but it depends on power, connectivity and payment networks staying up, and it can exclude people without bank accounts.
Digital cash is a loose label. It can refer to central bank digital currencies, which are a direct liability of the central bank like physical notes. It can also mean balances in digital wallets, which are claims on a company or bank, or cryptocurrencies such as bitcoin, which are not legal tender in most countries.
Limitations of Cash
- Loss and theft: physical cash is a bearer instrument. Whoever holds it can spend it, and a lost note is usually gone for good.
- No built-in record: cash leaves no transaction trail, which helps privacy but complicates budgeting, bookkeeping and proving a payment.
- Handling costs: businesses pay to count, secure, insure and deposit it.
- Reporting rules: in the US, businesses must report cash payments over $10,000 received in a single transaction or related transactions, and banks report large cash deposits and withdrawals.
FAQs
What came first, cash or bank accounts?
Cash, in the form of commodity money and coins, came first. Bank accounts grew out of the practice of merchants, temples and later banks safeguarding valuables and recording claims on them.
Is a check considered cash?
In everyday accounting, a check received but not yet deposited is often recorded as cash, since it is a demand claim on a bank account. It is not legal tender, though, and it can still bounce if the payer's account lacks funds.
The Bottom Line
Cash matters to anyone who pays bills, runs a business or reads a balance sheet. It is the most liquid asset, but physical notes can be lost or stolen, leave no record and lose purchasing power to inflation. Keeping cash in an interest-bearing account offsets some of that loss, and businesses should separate true cash equivalents from longer-term holdings when reporting.
