Policy Rate
Category
Makroökonomie & Zentralbanken
Sub-category
Geldpolitik
Curated by
Last reviewed
The policy rate is the interest rate set by a central bank at which commercial banks refinance themselves. It is the most important instrument of monetary policy: changes affect credit costs, bond yields, currencies and equity valuations. Fed and ECB rate decisions rank among the most market-moving dates in the calendar – what matters is the deviation from market expectations.
Context & Mechanics
How it works
The policy rate is the price of money at the source: at this rate commercial banks borrow from the central bank or park deposits there. In the US the Fed steers the federal funds rate as a target range; in the euro area the ECB sets three rates – currently the deposit rate is the most relevant. Via bank refinancing the policy rate affects lending and savings rates, corporate financing and ultimately inflation and the economy: higher rates dampen demand and price pressure, lower rates stimulate.
Effect on asset classes
The policy rate anchors the entire interest-rate structure: bond yields and the yield curve price expected policy paths, equity valuations react via the discounting of future earnings (highly valued growth stocks disproportionately), and currencies follow rate differentials between currency areas. For price reactions it is never the absolute rate that counts but the deviation from the priced-in path: an exactly expected hike moves little – a 0.25-percentage-point surprise can move indices and currency pairs by a percent and more within minutes.
Rate decisions as a trading event
FOMC and ECB dates follow a fixed calendar. Besides the decision itself, the accompanying projections and the press conference move markets – forward guidance about future steps often weighs more than the current rate. Around the dates spreads widen, liquidity thins and volatility jumps; some prop-firm programs have explicit news-trading bans.
Why it matters for traders
The policy-rate regime defines the market environment: hiking cycles, rate plateaus and cutting cycles have historically favoured different sectors, styles and volatility levels. In the GlanWick chart, historical market reactions to rate decisions can be traced by way of example – GlanWick is a training and simulation tool and not a prop firm itself.
Execution Example
Ahead of a Fed decision the market prices a pause with 90% probability. The Fed surprises with a 0.25-percentage-point hike. An index trader ($100,000 account) has marked the date and observes instead of holding a position across the decision.
- Surprise: only 10% of market participants had priced the hike → the entire rate curve is repriced.
- Immediate reaction: the index falls 1.5% within minutes, the 2-year yield jumps, the US dollar appreciates.
- Second wave: the press conference 30 minutes later can amplify the move or reverse it completely – forward guidance often weighs more than the decision itself.
- Cost view: spreads in the index future temporarily sit at a multiple of their normal value around the date – unplanned positions carry pure event risk without a setup.
Execution Risk & Errors
Trading the absolute rate instead of the deviation from market expectations
Underestimating the press conference and projections after the decision
Holding positions across rate decisions without a plan
Equating the effect on different asset classes
Ignoring forward guidance, which often moves markets more than the current rate
Frequently Asked
Which policy rates matter most for traders?
The Fed's federal funds rate and the ECB rates (especially the deposit rate) move global markets the most. Depending on the market, traders also watch the Bank of England, Bank of Japan and SNB.
Why do rate decisions move markets so strongly?
Because the policy rate anchors the entire interest-rate structure: bond yields, discounting of corporate earnings and currency differentials react simultaneously. Surprises versus the priced-in path trigger the largest moves.
What is forward guidance?
The central bank's communication about its likely future rate path. It often moves markets more than the current decision because prices reflect expectations, not the present.
How are policy rate and inflation connected?
Central banks raise the policy rate when inflation sits above the target of around 2% to dampen demand and price pressure – and cut it when the economy is weak or inflation too low.