# United States Monetary Base: Total

United States Monetary Base: Total was down 0.5% year on year in September 2026, compared with −4.8% in August 2026.
The level stood at 5,449.8 USD bn.
That is the highest reading since August 2025.
Over the past ten years it has ranged from −15.7% (Dec 2022) to 58.7% (May 2020), averaging 4.8%.

- Source agency: Board of Governors of the Federal Reserve System (Data Download Program)
- Makrognosis code: `US.MONBASE.M.NSA`
- Frequency: monthly
- Units: USD bn
- Coverage: 1966-01-01 to 2026-09-01 (729 observations)
- Page: https://makrognosis.robomacro.com/data/united-states/monetary-base-total

## Recent data

| Period | Value | Y/Y % |
|---|---:|---:|
| September 2026 | 5,449.8 USD bn | −0.5 |
| August 2026 | 5,411.6 USD bn | −4.8 |
| July 2026 | 5,523.9 USD bn | −3.8 |
| June 2026 | 5,488.4 USD bn | −4.5 |
| May 2026 | 5,538.9 USD bn | −1.9 |
| April 2026 | 5,470.4 USD bn | −4.6 |
| March 2026 | 5,458.6 USD bn | −5.5 |
| February 2026 | 5,388.0 USD bn | −4.0 |
| January 2026 | 5,402.5 USD bn | −3.8 |
| December 2025 | 5,373.7 USD bn | −4.1 |
| November 2025 | 5,302.1 USD bn | −5.6 |
| October 2025 | 5,361.8 USD bn | −3.7 |
| September 2025 | 5,478.0 USD bn | −2.0 |
| August 2025 | 5,686.1 USD bn | 0.3 |
| July 2025 | 5,740.0 USD bn | 1.5 |
| June 2025 | 5,748.2 USD bn | 0.3 |
| May 2025 | 5,648.1 USD bn | −1.3 |
| April 2025 | 5,732.4 USD bn | −0.7 |
| March 2025 | 5,774.8 USD bn | −1.8 |
| February 2025 | 5,613.3 USD bn | −4.8 |
| January 2025 | 5,613.5 USD bn | −3.9 |
| December 2024 | 5,603.5 USD bn | −3.8 |
| November 2024 | 5,615.9 USD bn | −2.0 |
| October 2024 | 5,566.6 USD bn | −0.6 |

## API

```
curl -H "X-API-Key: $MAKROGNOSIS_KEY" \
  "https://makrognosis.robomacro.com/v1/series/US.MONBASE.M.NSA"

# Python
import requests
r = requests.get("https://makrognosis.robomacro.com/v1/series/US.MONBASE.M.NSA",
                 headers={"X-API-Key": KEY})
obs = r.json()["observations"]
```