Primary sources and research tools

Verify bond information at the source

Use official websites for current Treasury rates, U.S. savings bond rules, auction results, tax requirements, issuer filings and investor-protection guidance.

Independent directory

Bond Atlas does not operate these services and is not endorsed by or affiliated with them. External links open the official destination in a new tab. The destination's terms, accessibility and privacy practices apply.

Treasury and savings bonds

Rates, accounts, auctions and economic data

TreasuryDirect.gov

The official U.S. Treasury platform for Series EE and I savings bonds, Treasury auction information, account services and current product rules. Always type the address carefully before signing in.

Visit www.treasurydirect.gov

TreasuryDirect savings bonds

Official descriptions of U.S. savings bonds, current rates, purchase limits, redemption rules, tax information and links to account support.

Review savings bond information

TreasuryDirect auctions

Tentative auction schedules, announcements, results and security terms for Treasury bills, notes, bonds, TIPS and floating-rate notes.

Check Treasury auction information

U.S. Department of the Treasury

Department-wide policy information, debt and financing material, press releases and links to Treasury offices and programs.

Visit the U.S. Treasury

Bureau of Labor Statistics

Official Consumer Price Index releases and methodology. CPI-U is central to I Bond inflation rates and TIPS principal adjustments.

Read CPI information

Federal Reserve Economic Data

FRED, maintained by the Federal Reserve Bank of St. Louis, provides historical Treasury yields, interest-rate series and economic charts.

Explore FRED data

Taxes, filings and investor research

Read the documents behind a summary

IRS Publication 550

Federal tax information on investment income and expenses, including savings bonds, original issue discount, market discount and bond premiums.

Read IRS Publication 550

IRS Publication 970

Rules for education tax benefits, including the conditional savings bond interest exclusion and related Form 8815 requirements.

Review education tax rules

Investor.gov

The SEC's investor education website covers bonds, funds, fees, risk, fraud prevention and checking the registration of financial professionals.

Visit Investor.gov

SEC EDGAR

Search public-company filings and offering documents used in corporate bond and credit research.

Search SEC filings

FINRA fixed-income center

Fixed-income market data and educational material covering corporate, agency, municipal and other bonds.

Explore FINRA bond data

MSRB EMMA

The Municipal Securities Rulemaking Board's Electronic Municipal Market Access service provides municipal bond disclosures, trade data and educational resources.

Research municipal bonds on EMMA

How to use external sources carefully

Confirm the domain before entering personal information; TreasuryDirect account access belongs only on the official TreasuryDirect.gov website.
Check publication and effective dates, especially for rates, purchase limits and tax thresholds.
Distinguish current official data from dated examples on educational websites.
Use the original prospectus, offering statement or tax form when a decision depends on exact terms.
Contact the responsible agency or account provider for account-specific questions.

Need help interpreting the terminology? Visit the Bond Atlas glossary, read the U.S. savings bonds guide or browse all educational guides.