Securities & Savings Bonds Datasets — U.S. Treasury Fiscal Data

Treasury Securities Auctions Data

Endpoint: /v1/accounting/od/auctions_query Frequency: As Needed Date Range: November 1979 to present

Historical data on Treasury securities auctions including bills, notes, bonds, TIPS, and FRNs.

Key fields:

# Get recent 10-year Treasury note auctions
resp = requests.get(
    "https://api.fiscaldata.treasury.gov/services/api/fiscal_service/v1/accounting/od/auctions_query",
    params={
        "filter": "security_type:eq:Note,original_security_term:eq:10-Year,inflation_index_security:eq:No,floating_rate:eq:No",
        "sort": "-auction_date",
        "page[size]": 10
    },
    timeout=30,
)
resp.raise_for_status()
df = pd.DataFrame(resp.json()["data"])

# Get all auctions in 2024
resp = requests.get(
    "https://api.fiscaldata.treasury.gov/services/api/fiscal_service/v1/accounting/od/auctions_query",
    params={
        "filter": "auction_date:gte:2024-01-01,auction_date:lte:2024-12-31",
        "sort": "-auction_date",
        "page[size]": 10000
    },
    timeout=30,
)
resp.raise_for_status()
assert resp.json()["meta"]["total-pages"] <= 1, "Use fetch_all for more pages"

Treasury Securities Upcoming Auctions

Endpoint: /v1/accounting/od/upcoming_auctions Frequency: As Needed Date Range: March 2024 to present

Schedule data can include historical rows. Filter auction_date:gte:<today> for future auction dates, or issue_date for settlement timing. Do not assume an unfiltered response contains only upcoming events.

Key fields:

# Get upcoming auctions
from datetime import date
resp = requests.get(
    "https://api.fiscaldata.treasury.gov/services/api/fiscal_service/v1/accounting/od/upcoming_auctions",
    params={"filter": f"auction_date:gte:{date.today().isoformat()}", "sort": "auction_date", "page[size]": 1000},
    timeout=30,
)
resp.raise_for_status()
assert resp.json()["meta"]["total-pages"] <= 1, "Use fetch_all for more pages"
upcoming = pd.DataFrame(resp.json()["data"])
if upcoming.empty:
    print("No upcoming rows returned for the requested date range")
else:
    print(upcoming[["auction_date", "security_type", "security_term", "offering_amt"]])

Record-Setting Treasury Securities Auction Data

Frequency: As Needed

Tracks auction records (largest, highest rate, lowest rate, etc.) for each security type and term.

Treasury Securities Buybacks

Frequency: As Needed (2 data tables) Date Range: March 2000 to present

Data on Treasury's secondary market buyback (repurchase) operations. Active since the program's relaunch in 2024.

# Recent buyback operations
resp = requests.get(
    "https://api.fiscaldata.treasury.gov/services/api/fiscal_service/v1/accounting/od/buybacks_operations",
    params={"sort": "-operation_date", "page[size]": 10},
    timeout=30,
)
resp.raise_for_status()
df = pd.DataFrame(resp.json()["data"])
print(df[["operation_date", "settlement_date"]].head())

I Bonds Interest Rates

Endpoint: /v1/accounting/od/i_bonds_interest_rates Frequency: Semi-Annual (May and November) Date Range: September 1998 to present

Composite interest rates for Series I Savings Bonds, including fixed rate and inflation rate components.

Key fields:

Do not take the first row sorted only by earning period: many issue-month vintages share that period and have different fixed rates. Filter issue_year_month for the bond, and choose the earning period appropriate to the reporting date. The first period may be shorter than six months. The current rate for newly issued bonds is not the rate for every outstanding I Bond. See examples.md for a query that names its issue vintage.

U.S. Treasury Savings Bonds: Issues, Redemptions & Maturities

Three data tables under /v1/accounting/od/:

Frequency: Monthly Date Range: September 1998 to present

The savings_bonds_report table counts paper bonds by series; its fields are not dollar amounts. Its API coverage starts in January 2019; the other tables have different start dates. These counts should not be interpreted as all electronic and paper savings-bond sales.

Key fields (savings_bonds_report):

Savings Bonds Value Files

Frequency: Semi-Annual Date Range: May 1992 to present

Files for calculating current redemption values of savings bonds.

Accrual Savings Bonds Redemption Tables (Discontinued)

Endpoint: /v2/accounting/od/redemption_tables Frequency: Discontinued (last updated 2022) Date Range: March 1999 – May 2023

Monthly redemption value tables for historical savings bonds.

Savings Bonds Securities Sold (Discontinued)

Endpoint: /v1/accounting/od/slgs_savings_bonds (despite its name, this is historical savings-bond statistics, not SLGS interest rates).

Frequency: Discontinued Date Range: October 1998 – June 2022

State and Local Government Series (SLGS) Securities

Endpoint: /v1/accounting/od/slgs_securities Frequency: Daily Date Range: October 1998 to present

SLGS securities outstanding data — non-marketable special purpose securities sold to state and local governments.

Monthly State and Local Government Series (SLGS) Securities Program

Endpoint: /v2/accounting/od/slgs_statistics

Frequency: Monthly Date Range: March 2014 to present

Monthly statistics on the SLGS program.

Electronic Securities Transactions

Frequency: Monthly (8 data tables) Date Range: January 2000 to present

Counts of sales, transfers, redemptions, outstanding securities and accounts in TreasuryDirect. These transaction tables do not provide bond values or yields; do not describe them as TRADES settlement data.

Federal Investments Program

Interest Cost by Fund

Frequency: Monthly Date Range: October 2001 to present

Monthly interest components by Federal Investments Program account/Treasury Account Symbol, including premiums, discounts, interest payments and inflation compensation.

Principal Outstanding

Frequency: Monthly (2 tables) Date Range: October 2017 to present

Statement of Account

Frequency: Monthly (3 tables) Date Range: November 2011 to present

Federal Borrowings Program

Distribution and Transaction Data

Frequency: Daily (2 tables) Date Range: September 2000 to present

Interest on Uninvested Funds

Frequency: Quarterly Date Range: December 2016 to present

Summary General Ledger Balances Report

Frequency: Monthly (2 tables) Date Range: October 2005 to present

Official sources

Reviewed 2026-09-30 against the current dataset dictionaries and live API responses.

• Treasury Securities Auctions Data
• Upcoming Auctions
• I Bonds Interest Rates
• Savings Bonds Issues Redemptions Maturities By Series
• Slgs Securities
• Slgs Securities Program Stats