skopa
Sharpening the lens…
Interactive · 5 min

You are the Fed.
Move the dial.

The Federal Reserve has one tool that matters: a single interest rate. Drag it. Watch mortgages, jobs, stocks, the dollar, and inflation respond. The lags are real. The trade-offs are unforgiving.

FED FUNDS RATE
2.50%
drag to set
The overnight rate banks charge each other. Everything else follows it.
The Fed's two-job scorecard
Inflationin target
2.00%
target: 1.5–2.5%
Unemploymentin target
4.00%
target: 3.5–4.5%
The ripple

Where your decision lands.

Live · 30Hz
10-yr Treasury· 0.00
3.50%
30-yr Mortgage· 0.00
5.70%
Corp Credit Spread· 0.00
1.40%
S&P 500· 0.00
4500
Dollar Index (DXY)· 0.00
100.0
Housing Index· 0.00
320
Real GDP Growth· 0.00
2.20%
Unlock the rest of the toolkit

One rate isn't enough.

When the policy rate hits zero, or markets stop listening, the Fed reaches for the other tools. Reveal them one at a time.

02

Quantitative Easing

locked

When rates can't go below zero, the Fed buys bonds — trillions of them. That floods banks with cash and pushes long-term rates down. Invented in 2008. Now standard.

03

Reserve Requirement

locked

The fraction of deposits banks must hold as reserves. Raise it, and banks lend less. The Fed dropped it to zero in 2020 — and never put it back.

04

Forward Guidance

locked

What the Fed says about future moves matters almost as much as what it does. A hawkish tone alone tightens markets. A dovish one loosens them.

Run history

Four decisions that shaped the world.

Snap the console to a real historical moment and watch the system reach a new equilibrium. These are approximations, not replays.

The point

Every rate decision trades one bad number for another. Kill inflation, lose jobs. Save jobs, lose price stability. Eight times a year, twelve people in a room pick which trade-off America will live with.

Now you've felt it. That's the whole article.

Common questions

Frequently asked

How does the Fed funds rate affect mortgages and stocks?

The Fed sets the overnight rate banks charge each other, and other rates price off it. The 10-year Treasury moves, 30-year mortgage rates follow the 10-year, and equity valuations reprice because a higher discount rate cuts the present value of future earnings. The effects arrive with long lags.

What is quantitative easing?

Quantitative easing is the Fed buying bonds — often trillions of dollars’ worth — to push down long-term interest rates when the overnight rate is already at zero and cannot go lower. It was invented in 2008 and has since become a standard tool.

What is forward guidance in monetary policy?

Forward guidance is what the Fed says about its future intentions. It matters almost as much as what it does: a hawkish tone tightens financial conditions on its own, and a dovish tone loosens them, before any rate actually changes.