Where should your savings actually sit?

How much should I put in a high-yield savings account?

Everything you might need within the next five years, and nothing you will not — that is typically your emergency fund plus any known upcoming costs, such as a deposit, a wedding or a car.

A high-yield savings account is for money whose job is to still be there. It does not fall in value, you can reach it in a day or two, and the rate is meaningfully better than a current account pays. Those three properties are exactly what short-term money needs.

Money you will not touch for a decade has a different problem: at a savings rate it is very likely to lose purchasing power to inflation over that period, slowly and without anything obvious happening. That is the case for investing it instead, with all the risk that carries.

Five years is a rule of thumb rather than a law, and the real test is whether you could leave the money alone through a bad couple of years without needing it. If the honest answer is no, it belongs on the savings side of the line regardless of the date.

What counts as a good savings account rate?

A good savings rate is one close to the central bank's base rate; a bad one is the near-zero rate most high-street current accounts pay, and the gap between them is usually several percentage points.

Quoting an actual number here would be wrong within months — savings rates move with central bank rates, sometimes several times a year. What does not move is the comparison: the best available rate tends to track the base rate reasonably closely, and the default rate on an account you opened years ago tends not to track anything at all.

The gap is the part worth acting on. On a meaningful balance, moving from a typical big-bank rate to a competitive one is often the largest single improvement available to somebody's finances that requires no change in behaviour, no risk and about twenty minutes.

Check two things before moving: whether the headline rate is an introductory bonus that expires, and whether it requires a minimum balance or a number of monthly deposits. Both are common, and both turn a good rate into an average one after the first year.

What does APY actually mean?

APY is the interest rate with compounding already included, which is what makes two APYs directly comparable even when the accounts compound at different frequencies.

A plain interest rate tells you what is added, but not how often. An account paying 5% compounded monthly ends the year slightly ahead of one paying 5% compounded annually, because the earlier payments spend part of the year earning interest themselves. APY folds that difference in and reports the figure you actually end up with.

Which is why APY is the number to compare on. If one account advertises an interest rate and another advertises an APY, they are not the same measurement and the difference favours whichever one chose to advertise the bigger-looking figure.

The equivalent on the borrowing side is APR, which does the same job for what a loan costs. The two get confused constantly, and the direction matters: you want a high APY and a low APR.

Is my money safe in an online-only bank?

Yes, provided the bank is covered by deposit insurance — in the US that is FDIC cover of up to $250,000 per depositor, per insured bank, and it protects your balance identically whether or not the bank has branches.

Deposit insurance is what makes the question answerable at all. It does not care how many buildings a bank owns; it cares that the institution is insured and that your balance is under the limit. A branchless bank with FDIC cover and a two-hundred-year-old bank with FDIC cover offer the same protection on the same money.

Two things worth checking rather than assuming. First, that the cover is real: look it up on the regulator's own site, not on the bank's marketing page. Second, whether the account is with the bank itself or with a fintech that holds your money at a partner bank — the second arrangement can still be insured, but the insurance attaches to the partner, and what happens if the fintech fails is a separate question from what happens if the bank does.

Outside the US the same principle applies under a different name and a different limit. The mechanism is always: an insured institution, a per-person limit, and a check that you are actually inside it.

How big should my emergency fund be?

Three to six months of essential expenses — not of income — held somewhere you can reach in a day and where it cannot fall in value.

Essential expenses, because that is what an emergency fund replaces: rent, food, bills, transport, minimum debt payments. It does not need to fund holidays. Using income instead of essentials produces a target that is often twice as large as it needs to be, which is discouraging enough that a good number of people never start.

Where in the three-to-six range you sit depends on how quickly you could replace your income. A salaried person in a field that hires constantly can sit at the bottom of it. A single earner supporting a household, a freelancer, or anyone in a specialised field where a job search takes months, should be at the top or past it.

Build it before investing anything beyond an employer match. Without a buffer, the first unexpected bill is met by selling investments or borrowing at a card rate — and both of those cost more than the buffer would ever have earned.

Do I have to pay taxes on my savings account interest?

Yes — interest is ordinary income in the year it is credited to the account, taxed at the same rate as the rest of your income, whether or not you withdraw it and whether or not the bank sends you a form.

The form is where most of the confusion starts. A bank issues a 1099-INT once it has paid you ten dollars or more of interest in a year, so a smaller balance can earn interest and generate no paperwork at all. That threshold is about the form and not about the tax: the interest is reportable either way, and the bank reports it whatever it puts in the post to you.

Ordinary income is the part worth internalising, because it means savings interest is taxed at your marginal rate rather than at the lower rate that applies to long-term investment gains. A quoted APY is therefore a pre-tax number, and somebody whose top rate is 24% keeps about three quarters of it. That does not change which account is better — two savings rates are taxed identically, so the comparison between them is untouched — but it does change what the yield means once inflation is set against it.

It is taxed when it is credited, not when it is spent, which surprises people who think of interest left in the account as money they have not taken yet. Leaving it there defers nothing. Retirement accounts are the exception, and that exception is most of what makes them worth using.

The figures above are US federal ones, states treat interest differently from one another, and some kinds of interest are not taxed the way a plain savings account is. Which of those applies to you is a question for whoever prepares your return. What a budgeting app can say is narrower and still useful: the interest is income, so it belongs in the income column rather than turning up as a balance that grew on its own.