What is Fixed Income?

Fixed income is a category of investments that pay a defined stream of income, most often interest on a set schedule with principal repaid at maturity. Bonds are the classic example: you lend money to a government or company, it pays you a stated rate of interest along the way, and it repays the face value when the bond matures.

The name comes from those scheduled payments, not from the investment’s value. A bond’s coupon may be fixed for its whole life, but its market price moves every day, and that price is what changes when interest rates do. The phrase also has a second, everyday meaning: someone “living on a fixed income” has income that doesn’t grow, such as a pension without cost-of-living increases. This article uses the investment sense.

How Fixed Income Investments Work

A conventional bond has three basic terms. The face value (or par) is what the issuer repays at maturity, often $1,000 per bond. The coupon rate sets the interest, so a 4% coupon on $1,000 pays $40 a year, usually in two $20 installments. The maturity date is when the loan ends and principal comes back. Not every fixed income security has all three: zero-coupon bonds pay no coupon until maturity, floating-rate notes reset their interest with market rates, and bond funds never mature at all.

What you earn depends on the price you pay. Buy that bond at $1,000 and hold it to maturity, and your yield is 4%. Buy it at $950 and your yield is higher, because you collect the same coupons plus a $50 gain at maturity. That is why bond quotes list both a price and a yield, and why the two always move in opposite directions.

When market interest rates rise, newly issued bonds pay more, so existing bonds with lower coupons have to fall in price to compete. Longer maturities fall further, because the below-market coupon is locked in for longer. If rates on comparable bonds moved from 4% to 5%, a $1,000 bond with a 4% coupon would drop to roughly:

Hold any of those bonds to maturity and you still receive $1,000, assuming the issuer doesn’t default. The price drop only becomes a realized loss if you sell before then.

Types of Fixed Income Securities

Fixed income covers a range of issuers, and who owes you the money determines most of the risk and the tax treatment.

Treasury bonds and other Treasuries anchor the low-risk end. As you move toward corporate and high-yield debt, yields rise to compensate for the chance that the issuer can’t pay.

Fixed Income Risks

Interest rate risk is the price sensitivity shown in the table above. It matters most if you might need to sell before maturity, or if you hold a bond fund, which never matures.

Inflation risk is the loss of purchasing power. A 4% coupon buys less every year that prices rise, and if inflation outpaces your yield, your real return is negative. TIPS address this directly by adjusting principal with the Consumer Price Index.

Credit risk is the chance the issuer misses payments or defaults. Ratings agencies grade issuers, and the gap between a bond’s yield and a comparable Treasury’s (the credit spread) is what the market charges for that risk.

Reinvestment and call risk show up when rates fall. Coupons and maturing principal get reinvested at lower rates, and callable bonds can be redeemed early by the issuer, just when replacing them is least attractive.

Fixed Income Funds and ETFs

You can also hold fixed income through mutual funds or exchange-traded funds (ETFs) instead of individual bonds. A fund spreads your money across many issuers, reinvests maturing bonds automatically, and lets you buy in small amounts. Broad bond index funds track a market-wide bond index at low cost.

The tradeoff is that a fund has no maturity date. An individual bond held to maturity returns face value on a known date; a fund’s share price can stay below what you paid if rates rise, although its yield also climbs as it buys newer bonds. If you need specific amounts on specific dates, a bond ladder of individual bonds or target-maturity ETFs matches those dates more precisely.

Fixed Income vs. Stocks in Retirement Planning

Stocks have historically delivered higher long-term returns, with much larger drawdowns along the way. Fixed income gives up some of that growth in exchange for steadier value and predictable cash, which becomes more useful as the date you need the money gets closer.

In retirement, one job of the fixed income side is to fund the next several years of withdrawals so you aren’t forced to sell stocks after a crash, the risk known as sequence of returns risk. How much to hold depends on your spending needs, other guaranteed income such as Social Security or a pension, and how large a decline you could live through without changing your plans. A glide path that shifts the mix gradually over time is one way to handle the transition.

Drawing a bond allocation that changes with age in a retirement planner like ProjectionLab shows what that tradeoff does to your projected balance and spending.

Account placement matters too. Taxable bond interest is taxed as ordinary income each year, which is a reason to hold it in tax-deferred accounts like a traditional IRA or 401(k), while municipal bonds belong in taxable accounts where their tax exemption has value.

Frequently Asked Questions

What is fixed income in simple terms? An investment that pays you interest on a schedule and returns your money on a set date. You’re acting as the lender rather than an owner, which is the key difference from stocks.

Are bonds fixed income? Yes. Bonds are the core of the fixed income market. Treasuries, municipal bonds, and corporate bonds all fall in the category, as do CDs and, depending on who’s categorizing, preferred stock.

Which investment type is a fixed income investment, meaning you get paid on a regular schedule? A bond. It pays interest at regular intervals, usually every six months, and repays its face value at maturity. A CD works the same way on a smaller scale.

Is a fixed annuity a fixed income investment? A fixed annuity is an insurance contract, not a security, but it plays a similar role: it pays a guaranteed rate or a guaranteed income stream. The guarantee depends on the insurer’s ability to pay rather than on a government or bond issuer. See annuity for how the main types differ.

Can you lose money in fixed income? Yes. Prices fall when rates rise, issuers can default, and inflation can erode what the payments are worth. Holding high-quality bonds to maturity removes the price risk, but not the inflation risk.