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The essentials
- APY includes a stated compounding assumption; APR needs context, especially on crypto platforms.
- A hypothetical nominal 12% rate compounded monthly produces 12.6825% over one year before costs.
- An advertised yield does not establish principal protection, withdrawal access, or a dependable future return.
Start with the meaning of the label
APR and APY express annual rates, but answer different questions. In consumer lending, APR measures borrowing cost and can include specified fees beyond interest. APY describes interest earned with compounding under stated assumptions. These established uses do not mean every crypto dashboard follows the same calculation or disclosure rules.
Some crypto products use APR to mean a nominal reward rate without reinvestment. Read that product’s definition before comparing it with APY. Identify whether the figure concerns borrowing, deposits, lending, or promotional rewards, and whether it is fixed, variable, estimated, or derived from a recent short period.
A worked compounding example
Assume a purely hypothetical nominal annual rate of 12%, paid at 1% each month, with every payment immediately reinvested at the same rate. Starting with 1,000 units, the first month adds 10 units; the second earns 10.10 because the balance is now 1,010. There are no fees, taxes, withdrawals, or rate changes.
The annual result is (1 + 0.12 / 12)^12 − 1 = 0.1268250301, or 12.6825%. The balance becomes 1,126.83 units when rounded to two decimals. Without reinvesting monthly payments, total interest is 120 units. The extra 6.83 comes from earning on earlier interest; it is arithmetic under the assumptions, not an available offer.
| Hypothetical method | Rate assumption | Balance after one year |
|---|---|---|
| No reinvestment | 12% nominal; 120 units paid separately | 1,000 principal + 120 interest |
| Monthly reinvestment | 1% monthly; 12.6825% effective annual yield | 1,126.83 units |
Find the activity behind the yield
A token’s target price does not itself generate income. A stablecoin yield arrangement may lend assets to borrowers, deploy them in another investment activity, or pay rewards from a promotional budget. The source of payment matters because a borrower’s obligation, investment result, and temporary subsidy behave differently when conditions change.
Separate the stablecoin issuer from the company or protocol offering yield. Ask which entity receives the assets, how it uses them, who owes repayment, and what happens if that party cannot pay. If rewards arrive in another token, the advertised percentage may also depend on that reward token’s changing price.
Separate earnings from access and principal
A displayed balance can grow while the amount you can actually recover falls. Borrower default, a platform failure, custody problems, or an asset losing its peg can damage principal. A higher APY cannot describe how likely those events are or how much might be recovered after a failure.
Liquidity is a separate question: withdrawals may involve lockups, queues, processing limits, or market sales at an unfavorable price. Read withdrawal and custody terms alongside the rate. The word “interest” or a familiar savings-style interface does not establish bank-deposit protection; any protection claim needs its own applicable terms and evidence.
Compare assumptions, then actual outcomes
Put two offers on a common basis: same holding period, balance tier, payout currency, and reinvestment schedule. Check whether the headline applies only to a capped balance or introductory period. Include platform charges, network costs, and conversion spreads where relevant; frequent reinvestment can add costs rather than deliver the frictionless formula.
An annualized figure extrapolated from a few days does not show what a full year will deliver. Distinguish projected rewards from payments received, and tokens received from money available after conversion. The calculations here explain rate mechanics without promising returns.
Official sources
An explanation of financial mechanics based on official sources. Hypothetical calculations are not actual trading results or forecasts.
