This view presents reserve balances with Federal Reserve Banks, optionally adjusted by Nominal GDP or Fedwire Funds Service transaction volume. Use the date range and the adjustment selector to view ratios relative to broader activity measures. In the Fed’s framework, “ample reserves” is a regime in which the federal funds rate can be controlled within its target range without active day‑to‑day reserve management. As transaction volumes (proxied by nominal GDP and Fedwire volume) rise, the likelihood that some banks become short of reserves increases, which can push up interbank funding rates. A recent Fed staff note, What can public Fedwire payments data tell us about ample reserves?, suggests that a reserves‑to‑Fedwire‑volume ratio around 0.65 may be indicative of “ample reserves.” Some practitioners also consider a reserves‑to‑nominal‑GDP ratio above ~0.10 as a useful signal. These thresholds are uncertain and historically inferred; they should be used alongside other indicators, such as the behavior of short‑term interest rates.