You've got spare cash sitting in savings or checking — where should it actually go?

If your employer matches what you put into a 401(k), take every dollar of it. CFP® professionals keep landing on the same advice: contribute at least enough to get the full match, then raise your contribution over time.

Here is why it jumps the line. Say your employer adds 50 cents for every dollar you contribute, up to 6% of your pay. On a $70,000 salary you put in $4,200 and your employer adds $2,100. That is an extra 50% on top of what you put in, once the match is vested. Nothing else on this list pays that.

The catch: you cannot write a check to your 401(k). Contributions come out of your paycheck. So raise your contribution rate to the full match percentage, then use your spare cash to cover the smaller paychecks while your budget catches up.

While you are logged in, check three things:

• The match formula. It is in your plan documents. “Up to 6%” and “up to 3%” are very different amounts.
• The vesting schedule. Some employers make you stay a set time before the match is fully yours.
• The ceiling. You can contribute up to $24,500 in 2026, plus $8,000 more if you are 50 or older. Most matches top out far below that. Check anyway.

No match, or no 401(k)? Skip to step 3.

This bucket is full when your contribution rate equals the highest percentage your employer will match.

Credit card balances that carry interest were charged an average of 22.15% in May 2026, according to the Federal Reserve. Paying that balance off means you stop paying 22% on it. That return is certain and it is tax-free, which is more than anything you can safely buy will offer you.

CFP® professional Leo Marte lays out the mechanics. Automate the minimum payment on every debt, then pick one of two methods for the extra cash:

• Avalanche: highest interest rate first. You pay the least interest overall.
• Snowball: smallest balance first. You get quick wins that keep you going.

Pick the one you will stick with. The arithmetic favors avalanche; the one you abandon in March favors nothing.

What counts as high interest? CFP Board’s guidance does not draw a line, so here is ours.

Why 4%? A 10-year Treasury yielded 5.31% on October 5, 2026, which is roughly 4% after federal tax in the 22% and 24% brackets. Debt that costs less than that is cheaper than what safe money earns.

If you parked a starter cushion in step 1 to get here faster, go back now and fill it to the full three to six months.

This bucket is full when every debt above 8% is gone and your emergency fund is at full size.

Everything left after step 3 gets sorted by one question: when will you need the money? Answer that and the vehicle picks itself.

Insured or not? Savings accounts at FDIC-insured banks are deposits, insured up to $250,000 per depositor at each bank. Index funds, bond funds and Treasuries are not deposits, are not FDIC-insured and may lose value. The Actual Best is not a bank, and FDIC insurance only covers the failure of an insured bank.

The 12-month line comes from CFP® professional David Zuckerman, who says to hold cash for major purchases planned within 12 months on top of your emergency fund, and warns that extra cash beyond that tends to fall behind after inflation and taxes.

High-yield savings. The rate is variable, so it can drop at any time. That is fine for money you need within a year, and for money that has no date yet. It is also where undated money should wait rather than sit in checking.

Index funds. An index fund covers a representative sample of the whole market, so you are buying the average. The SEC notes that large-company stocks have lost money about one year in three, which is why this is five-year-plus money. Articles on CFP Board’s consumer site suggest spreading stock holdings across company sizes and regions, and keeping total fees under about 1%.

Should all of it go into an S&P 500 fund? If steps 1 through 3 are done and the money is long-term, an index fund is the right vehicle. Two adjustments. An S&P 500 fund holds only large US companies, so a total-market or global fund spreads the risk further. And “all” means only the money you will not need for five years — nothing with a date closer than that belongs here, however good the returns look.

For long-term money the account matters as much as the fund. Fill them in this order:

• IRA or Roth IRA. Up to $7,500 for 2026, or $8,600 if you are 50 or older. Roth eligibility phases out from $153,000 to $168,000 of income for single filers and $242,000 to $252,000 for married couples filing jointly. CFP® professional Dan Forbes says young workers should seriously consider a Roth.
• More 401(k). Beyond the match, up to the $24,500 limit.
• A regular brokerage account. No limits and no lock-up, but no tax benefits.

One catch: money in a 401(k) or IRA is meant to stay there. Withdrawals before age 59½ are generally taxed, and most carry a 10% additional tax, with some exceptions. Only put in what you will not need before retirement.

This step is done when every remaining dollar has a date attached and sits in the vehicle that matches it.

If your spare cash arrived in one lump, find out how much of it is really yours before you start on step 1. This section covers federal rules for 2026. It is general information, not tax advice, so check your own numbers with a tax professional.

Bonuses. Employers often withhold a flat 22% on bonuses, or 37% on amounts over $1 million. That is a withholding rate, not your tax rate. A bonus is taxed as ordinary income, so if your top bracket is higher than 22% you will owe the difference when you file. Park that difference in savings until then.

1099 payments. Nobody withholds anything. You owe income tax plus self-employment tax of 15.3% once your net self-employment earnings reach $400. CFP® professional Lei Deng suggests moving 25% to 30% of every payment into a separate account the day it lands.

If you expect to owe $1,000 or more when you file, the IRS expects estimated payments during the year. They are due April 15, June 15, September 15 and January 15. You generally avoid a penalty by paying at least 90% of this year’s tax or 100% of last year’s, whichever is smaller. Higher earners face a stricter version, spelled out in Form 1040-ES.

Have a day job and just a couple of small 1099 payments? There is a shortcut. The IRS lets you raise the withholding on your paycheck with a new Form W-4 to cover it instead.

Inheritances. Cash you inherit generally is not income on your federal return. The IRS has a five-minute tool to check your situation. Federal estate tax is the estate’s job, and a return is only required when the estate is above $15 million for deaths in 2026. Three things can still cost you:

• Inherited retirement accounts. Withdrawals from a traditional IRA or 401(k) count as your income. Most non-spouse heirs must empty the account by the end of the tenth year after the death. Inherited Roth withdrawals are mostly tax-free.
• Selling inherited investments or property. Your starting value is generally what it was worth on the date of death. You are taxed only on gains above that.
• State taxes. Some states charge their own inheritance or estate tax.

An article on CFP Board’s consumer site advises heirs to keep cash on hand for taxes and wait 30 to 60 days before any major decision. A high-yield savings account is a fine place for the money to wait.

Run through these before you open a single transfer screen.

• Is some of this the IRS’s? If any of it is a bonus, a 1099 payment or an inherited retirement account, set the tax money aside first.
• Is anything big due in the next 12 months? A move, a car, a tuition bill. That money stays in savings.
• Which step am I actually on? Your next dollar goes to the first bucket that is not full. Do not skip ahead because investing is more interesting than paying off a credit card.
• Can I put a date on each chunk? No date, no vehicle. Undated money waits in high-yield savings.
• Would I leave it alone if it fell 30%? Index funds do that about one year in three. If the answer is no, that money belongs in savings whatever its date says.
• Is it automatic? Articles on CFP Board’s consumer site keep coming back to this: transfers that happen on their own actually happen.
• Did I keep a little for fun? CFP® professional Robert Pagliarini suggests a small, capped “mad money” account. A plan with some room in it is a plan you will keep.

And if the amount is big enough to change your life, slow down. Pagliarini’s advice for sudden wealth is to make only the decisions you have to make until you feel ready, and to get a professional on your side.

CFP Board does not publish a single ranked order for spare cash. Each step here is anchored in articles CFP Board publishes for consumers, or in a primary source: the IRS, the FDIC, the Federal Reserve or the SEC. The order of the steps and the rule-of-thumb thresholds — the 4% and 8% debt lines, the five-year line for stocks — are ours.

Rates are as of the dates shown and will change. This is general education, not personal financial, investment or tax advice. The Actual Best is not affiliated with or endorsed by CFP Board. CFP® and CERTIFIED FINANCIAL PLANNER® are certification marks owned by CFP Board.