A current account paying nothing costs a household with $10,000 saved several hundred dollars a year. Here is how instant-access, notice, fixed-term and government-backed options actually differ.
Cash is not a single thing. The account you choose determines how much you earn, how fast you can reach the money, and whether the balance can fall. Getting the match right between the money's purpose and the account's terms is most of the decision.
We do not quote specific interest rates, because they change constantly and any figure published today is misleading within months. What is stable is the structure — how each account type works, and what you give up for a higher rate. Check current rates with a comparison service before opening anything.
Money out the same day or next working day, no penalty, variable rate.
Use for: your emergency fund and your sinking funds — anything you might need without warning.
Watch for: two things. First, introductory bonus rates that run for twelve months and then drop sharply; the provider will not remind you. Second, restrictions dressed up as flexibility — accounts limiting you to three withdrawals a year still call themselves easy access, and breaching the limit typically drops the rate for the rest of the term.
A higher rate in exchange for giving 30, 60 or 90 days' notice before withdrawing.
Use for: the portion of savings beyond your emergency fund that you are unlikely to need suddenly — the back half of a house deposit, say.
Watch for: the notice period is the whole product. If you need the money in a week, you either cannot have it or you forfeit interest. Never hold your emergency fund here: emergencies do not give ninety days' notice.
You lock the money away for a set period — six months to five years — at a rate fixed on day one. Called a CD in the US, a fixed-rate bond in the UK, a term deposit elsewhere.
Use for: money with a known date. A tax bill due in a year, a wedding in eighteen months, a deposit on a completion date.
Watch for: early withdrawal is either impossible or expensive, often costing several months of interest. And a fixed rate cuts both ways — if rates rise you are stuck below the market for the full term.
Instead of putting $12,000 into one three-year fix, split it into three $4,000 deposits maturing in one, two and three years. Each year one matures and can be spent or reinvested at the prevailing rate. You get most of the higher long-term rate while keeping a third of the money reachable annually.
A money market account at a bank behaves like a savings account with some cheque or card access, and carries the same deposit protection.
A money market fund is a different thing: an investment fund holding very short-term government and corporate debt. Yields typically track central bank rates closely, and the funds are considered low risk — but they are investments, not deposits, and they are not covered by deposit insurance. In practice they are used by people holding larger cash balances than deposit protection covers.
Most countries have a way to lend directly to the state, and these are worth knowing about because they sit outside the banking system entirely:
Bank deposits are protected up to a limit per person, per institution, by a national scheme — $250,000 per depositor per bank in the US under the FDIC, and comparable schemes with their own limits in the UK, EU and elsewhere. Check the current limit for your country; it changes rarely but it does change.
Two details catch people out:
| Money | Where it belongs | Why |
|---|---|---|
| This month's bills | Current account | Access matters, interest is irrelevant on a small balance |
| Emergency fund | Instant-access savings, separate bank | Reachable in a day, far enough away not to be spent |
| Sinking funds | Instant-access savings or labelled pots | Spent within a year, on unpredictable dates |
| Known cost in 1–3 years | Fixed-term deposit or ladder | The date is known, so the lock-up costs nothing |
| House deposit, 2–4 years out | Notice or fixed-term, plus any tax-free wrapper | Too close to invest, large enough that the rate matters |
| Money not needed for 10+ years | Invested, not saved | Over long periods, cash reliably loses to inflation |
If your savings pay 4% and inflation runs at 3%, your real return is about 1% before tax on the interest — which in many cases takes it to roughly zero. Cash preserves the number, not the purchasing power.
That is an argument for holding the right amount of cash rather than for holding none. Cash beyond your emergency fund, sinking funds and known near-term costs is money working below its potential; see compound interest for what the same money does over decades when invested, and the order of operations for when to make the switch.
Two or three is usually right: one instant-access account for the emergency fund, one for sinking funds (or labelled pots inside it), and possibly a fixed-term deposit for a dated goal. Beyond that, the extra interest rarely justifies the admin, and complexity is the main reason people stop maintaining a system at all.
Do the arithmetic before deciding. On $5,000, half a percentage point is $25 a year — probably not worth an afternoon. On $40,000 it is $200 a year, and it recurs. The bigger win is usually moving money out of an account paying nothing, rather than chasing the top of the table between two decent rates.
In most countries, yes, though many have an allowance below which interest is untaxed, and tax-free wrappers such as an ISA in the UK or the various tax-advantaged accounts elsewhere. Because rules differ substantially by country and by personal circumstance, check your own tax authority's guidance — and note that a lower headline rate inside a tax-free wrapper can beat a higher taxable one.