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Markets and the dashboard · Lesson 1 of 2

Interest Rates: From the Fed's Decision to Your Budget

Trace how a Federal Reserve rate decision can and cannot reach your credit card, savings, and loans, with the September 2026 decision as a dated example.

12-minute lessonBeginnerUpdated

In this lesson you will

Trace how a Federal Reserve decision can reach your credit card, savings, and loans, and spot which of your own rates can move.

The idea in plain language

FactOn September 16, 2026, the Federal Reserve raised the target range for the federal funds rate by 1/4 percentage point, to 3-3/4 to 4 percent. The vote was 12 to 0. The next scheduled meeting is October 27 to 28, 2026.

The federal funds rate is what banks charge each other for overnight loans. The Fed does not set your credit card or savings rate directly, but its decisions ripple outward:

  • Variable-rate debt. A variable APR changes with an index such as the prime rate, which banks often adjust after Fed decisions. Your card agreement explains how and when your rate follows its index.
  • Fixed-rate loans. A fixed rate does not move with an index, so an existing fixed loan is not affected.
  • Savings. Banks set their own savings rates. Some follow quickly, some slowly, and some barely at all, so it pays to compare.
  • Bonds. When rates rise, newly issued bonds pay more, so older bonds with lower rates can sell for less. That is why the bond ETFs on the market dashboard tend to fall when rate expectations climb.

Worked example

IllustrationWhat a quarter point does to one card balance

Taylor carries $2,000 on a card with a variable 22 percent APR. If the APR rises by a quarter point to 22.25 percent, one month of interest goes from about $36.67 to $37.08, an extra $0.42 a month.

Small on its own. The balance, not the hike, drives most of the cost: paying the $2,000 down by half saves far more than any quarter-point change adds.

Monthly interest on a variable-rate card balance (illustrative)
BalanceAt 22.00% APRAt 22.25% APR
$1,000$18.33$18.54
$2,000$36.67$37.08
$5,000$91.67$92.71

Try it: list which of your rates can move

Your rates
Account or loanRateFixed or variable?What it is tied to

Then open the market dashboard and look at the Volatility + Rates group. Write down whether long bonds (TLT) and short Treasuries (SHY) are up or down today, and the quote time on each card.

Checklist

Limits of this lesson

  • No one knows the outcome of future Fed meetings. This page makes no forecast.
  • How quickly a bank passes on a change varies; check your own account terms.
  • The rate facts above were checked on October 7, 2026 and will change. Use the linked sources for the current decision.

Sources

Facts on this page were checked against these sources on October 7, 2026. Figures marked Illustration are arithmetic examples, not forecasts.

  1. Federal Reserve, FOMC statement, September 16, 2026 (opens in a new tab)
    The September 16, 2026 decision.
  2. Federal Reserve, FOMC meeting calendar (2026) (opens in a new tab)
    Scheduled meeting dates.
  3. CFPB, What is the difference between a fixed APR and a variable APR? (opens in a new tab)
    How variable APRs follow an index.
  4. Investor.gov (SEC), What is Risk? (opens in a new tab)
    Interest rate risk and bond prices.

Go deeper

Related articles from the MentorSurge archive. Articles reflect the date they were published; check time-sensitive figures.

About this lesson: original MentorSurge teaching material for general education. It is not individualized financial, investment, tax, or legal advice. Spotted an error? Tell us.

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