Interest Rates
Interest Rates
Interest Rates
Dataset: INTEREST_RATES (US)
This dataset provides a daily time series of key US interest rate benchmarks, sourced from FRED (Federal Reserve Economic Data). It is designed to give analysts and applications a single, consolidated endpoint for the most widely tracked rate indicators in fixed income and macroeconomic analysis.
Fields returned:
10YearTBillYield— The daily yield on the 10-year US Treasury note, the most important benchmark rate in finance. Used as the risk-free rate for DCF models, equity valuation, and as a proxy for long-term growth/inflation expectations.3MonthTBillYield— The yield on the 3-month Treasury bill, a proxy for the "risk-free" short-term rate and closely tied to Fed Funds policy expectations.10Y2YTreasurySpread— The spread between the 10-year and 2-year Treasury yields. This is the canonical yield curve indicator — when positive, the curve is normal (longer duration bonds yield more); when negative (inverted), it has historically preceded recessions.30YearFixedMortgageRate— The national average 30-year fixed mortgage rate. A key indicator for the housing market and consumer credit conditions.
Metadata fields:
date— The observation date (daily, weekdays only)country— Always"US"for this datasetid/key— Dataset identifiers (INTEREST_RATES/US) for use in API routingupdated— Unix timestamp (milliseconds) of the last data refresh
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Use Cases
There are many use cases for this dataset, here are some examples:
Equity Research & Valuation Using the 10-year yield as the risk-free rate input for DCF models and as a discount rate benchmark; monitoring rate regimes that affect sector rotation (rate-sensitive sectors like utilities, REITs, and financials).
Yield Curve Analysis Tracking the 10Y-2Y spread as a recession leading indicator; identifying curve steepening/flattening trends that signal shifts in Fed policy expectations or growth outlook.
Fixed Income & Credit Benchmarking corporate bond spreads against Treasuries; duration risk management; pricing interest rate derivatives and swaps.
Housing & Mortgage Market Analysis Monitoring the 30-year mortgage rate for housing affordability trends; used by homebuilder analysts, mortgage REITs, and consumer finance researchers.
Macro Strategy & Asset Allocation Characterizing the interest rate regime (rising, falling, flat) to inform cross-asset positioning; correlating rate moves with equity risk premiums and commodity prices.
Risk Management Setting rate-sensitive thresholds for portfolio alerts; stress-testing bond portfolios against yield spike scenarios; monitoring for yield curve inversion as a systemic risk flag.
Quantitative & Factor Models Including rate level and spread variables as macro factors in multi-factor equity models; backtesting strategies across different rate environments.
Corporate Finance & Banking Benchmarking loan pricing and net interest margin; informing capital structure decisions based on the cost of long-term debt.
Highlights
The INTEREST_RATES dataset delivers the four most consequential rate indicators in US finance — the 10-year Treasury yield, 3-month T-bill yield, 30-year fixed mortgage rate, and the 10Y-2Y yield curve spread — in a single daily-refresh API call. Spanning the full spectrum from short-term policy signals to long-term growth expectations, it serves as the macro backbone for equity valuation, fixed income analysis, housing market research, and recession risk monitoring. Whether you're sourcing a risk-free rate for a DCF model, triggering alerts on yield curve inversion, or contextualizing a sector call against the rate backdrop, this dataset provides the essential inputs in a clean, structured, and programmatically accessible format.
Provider
Methods
https://api.blueskyapi.com/v1/data/CORE/INTEREST_RATEShttps://api.blueskyapi.com/v1/data/CORE/INTEREST_RATES/:country
Time Series Query Parameters
You can use any time series query parameters with this dataset.
View the full documentation →
Response Attributes
| Key | Type | Description |
|---|---|---|
| 10Y2YTreasurySpread | number, null | |
| 10YearTBillYield | number, null | 10-year U.S. Treasury bill yield (%). |
| 30YearFixedMortgageRate | number, null | |
| 3MonthTBillYield | number, null | 3-month U.S. Treasury bill yield (%). |
country* key | string | |
date* index | string |
* required
| Field | Type | Unit | Description |
|---|---|---|---|
| date | string | YYYY-MM-DD | Observation date (daily, weekdays only) |
| country | string | — | Country code (e.g. US) |
| 10YearTBillYield | float | Percentage points | 10-year US Treasury yield (e.g. 4.45 = 4.45%) |
| 3MonthTBillYield | float | Percentage points | 3-month T-bill yield (e.g. 3.70 = 3.70%) |
| 10Y2YTreasurySpread | float | Percentage points | 10Y minus 2Y Treasury spread (e.g. 0.50 = 50 bps) |
| 30YearFixedMortgageRate | float | Percentage points | National average 30-year fixed mortgage rate |
| id | string | — | Dataset identifier (INTEREST_RATES) |
| key | string | — | Partition key (US) |
| subkey | string | — | Sub-partition key (empty) |
| updated | float | Unix ms | Timestamp of last data refresh |
Disclaimer
Interest rate and Treasury yield data is sourced from the US Department of the Treasury via the Federal Reserve Bank of St. Louis (FRED). 30-year fixed mortgage rate data is sourced from the Freddie Mac Primary Mortgage Market Survey (PMMS), distributed via FRED. This data is provided for informational purposes only and is subject to the terms of use of the respective data providers. Blue-Sky Data Platform LLC makes no representations as to the accuracy, completeness, or timeliness of the data and accepts no liability for decisions made in reliance upon it. Users are responsible for ensuring their use of this data complies with applicable provider terms and licensing requirements.
Attribution
Source: US Treasury Department and Freddie Mac via Fred