Investing FAQs

Investing Questions, Answered

Plain answers on index funds, dividends, and retirement accounts, checked against IRS, FINRA, and fund company sources.

Each answer gives you the short version first. Where a number helps, you'll see one, along with where it came from.

Updated November 1, 2026 Reviewed by Darlene Aberin 24 questions

24 questions

Index Funds

What index funds are, what they cost, and how they differ from other funds.

What is an index fund?

An index fund tries to match the return of a market index, like the S&P 500. It holds what's in that index instead of picking winners.

Index funds come as mutual funds or as ETFs. The strategy is the same in both. The way you buy and sell them is what changes.

What is the difference between an index fund and a mutual fund?

They aren't opposites. A mutual fund is a fund structure, and an index fund is an investing strategy. So an index fund can be a mutual fund.

The real comparison is index versus active. An index fund follows a benchmark. An active fund has a manager choosing what to buy. The full comparison of index fund vs mutual fund walks through fees, taxes, and trading.

How is an index mutual fund different from an index ETF?

The main difference is how they trade. FINRA notes that mutual funds price shares only once a day, after markets close. ETFs trade all day like a stock.

FeatureIndex Mutual FundIndex ETF
PricingOnce a day, at NAVAll day, at market price
How you buyThrough the fund or a brokerThrough a brokerage account
ExampleVanguard 500 Index Admiral (VFIAX)Vanguard S&P 500 ETF (VOO)

Why are index funds low cost?

Tracking an index takes less research than picking stocks, so many index funds charge very little. Vanguard lists 0.04% a year for VFIAX and 0.03% for VOO.

For context, Vanguard and Morningstar put the industry's average mutual fund fee at 0.50%. That's asset-weighted, as of December 31, 2025.

How much do fund fees cost over time?

More than most people expect. Take $10,000 growing at a hypothetical 6% a year for 20 years:

Annual FeeEnding Balance
0.04%$31,830
0.50%$29,178
1.00%$26,533

That's a gap of about $5,300 between the cheapest and priciest fund. These are Fin Loom calculations, not a forecast.

Can you lose money in an index fund?

Yes. An index fund rises and falls with its index. If the market drops, the fund drops too.

On October 12, 2022, the S&P 500 closed about 25.4% below its January high. A fund tracking it fell by a similar amount. You'd only lock in that loss by selling.

Do index funds pay dividends?

Many do. A stock index fund collects dividends from its companies. It passes them on to you as distributions.

Part of that payout may count as qualified dividends for tax. Your Form 1099-DIV shows the split in boxes 1a and 1b.

What is NAV?

NAV means net asset value. It's the value of one fund share, based on what the fund owns minus what it owes.

FINRA explains that mutual funds calculate NAV once a day, when markets close. Orders placed during the day get that end-of-day price.

Dividends

How dividends get paid, taxed, and reinvested.

What is a dividend?

A dividend is a payment a company makes to its shareholders, usually in cash. Many U.S. companies pay one each quarter.

The board decides whether to pay and how much. It can raise, cut, or stop the dividend at any time.

What is an ex-dividend date?

It's the cutoff for the next dividend. The IRS calls it the first date after a declaration when a buyer won't get that payment.

So you need to own the shares before the ex-dividend date. Buy on or after it, and the seller gets that payout instead.

What is dividend yield?

Dividend yield is the yearly dividend divided by the share price. It shows how much income you get per dollar invested.

Altria pays $4.44 a year. At its October 23, 2026 close of $74.31, that's a yield of about 5.97%. That's a Fin Loom calculation, not a recommendation.

Why can a very high dividend yield be risky?

Because yield goes up when the share price falls. A sinking price can push the yield higher while the business gets weaker.

A very high yield can be a warning that investors expect a cut. Cash flow, debt, and payout history show whether the dividend looks sustainable. The comparison of highest yield dividend stocks runs those checks on six large companies.

Are dividends taxable?

Yes, in a taxable account. Your broker reports them on Form 1099-DIV.

Ordinary dividends are taxed at your regular income tax rate. Qualified dividends get lower rates of 0%, 15%, or 20%, based on taxable income.

What makes a dividend qualified?

A dividend qualifies when it meets IRS rules on the company and your holding period. Those dividends get rates of 0%, 15%, or 20%.

For common stock, you generally need more than 60 days of ownership. They fall in a 121-day window around the ex-dividend date. The full rules on qualified dividends include the 2026 income thresholds.

Are reinvested dividends taxable?

Yes. IRS Publication 550 says you must still report dividends as income, even when they buy more shares.

Each reinvested purchase also starts its own cost basis and holding period. Keep those records for when you sell.

What is a DRIP?

A DRIP is a dividend reinvestment plan. It uses your cash dividends to buy more shares of the same stock or fund.

Those new shares earn dividends too. Say you hold 100 shares at $50, paid $0.50 a quarter. Five years of reinvesting at a flat price builds about 122 shares. Model it in the dividend reinvestment plan calculator.

What happens if a company cuts its dividend?

You get less income from every share you own. The stock price often reacts too, since a cut can signal trouble.

If you reinvest dividends, a cut also slows how fast your share count grows. That's why dividend growth is never guaranteed.

Retirement

Withdrawals, taxes, and the rules on retirement accounts.

When can I withdraw from a 401(k) without a penalty?

Generally at age 59½. The IRS adds a 10% early withdrawal tax to most withdrawals before then, unless an exception applies.

Regular income tax still applies either way. The penalty is an extra charge on top.

Is there an exception for leaving a job at 55?

Yes. IRS Topic 558 covers it. Leave your job in or after the year you turn 55, and the penalty doesn't apply.

It covers the plan of the job you left. Other plans and IRAs follow different rules.

How much tax do I pay on a 401(k) withdrawal?

Traditional 401(k) withdrawals count as ordinary income. You pay your regular rate, plus 10% if you're under 59½ without an exception. Here's one example:

  • The setup: a single filer with $50,000 of taxable income withdraws $20,000 at age 50.
  • Federal income tax: about $4,360 under 2026 brackets.
  • Early withdrawal tax: $2,000.
  • Total: about $6,360, or 31.8% of the withdrawal.

These are Fin Loom calculations. Run your own in the 401(k) withdrawal tax calculator.

Why did my 401(k) withhold 20%?

Plans generally withhold 20% for federal tax when they pay an eligible rollover distribution to you. That's from IRS Topic 413.

It's a prepayment, not your final bill. You settle any difference when you file your return.

At what age do required minimum distributions start?

Age 73. The IRS says you generally must start withdrawals from IRAs and workplace plans once you reach it.

Your first one is due by April 1 of the year after you turn 73. Some workplace plans let you wait until you retire.

Are Roth IRA withdrawals tax-free?

Qualified ones are. The IRS says qualified Roth IRA distributions are tax-free when you meet the requirements.

Withdrawals that don't qualify can owe tax on earnings, and possibly the 10% early tax. Check the rules before taking money out.

How long will my retirement savings last?

It depends on your balance, withdrawals, and returns. Here's one example. Start with $500,000 and draw $2,500 a month, rising 3% a year, while earning 5%.

Under those assumptions, the money could last about 20 years and 5 months. That's a Fin Loom calculation, and real returns won't be that smooth. Test your own numbers in the investment withdrawal calculator.