Symbols / US_TIPS_30Y

US_TIPS_30Y

US Treasury 30-Year TIPS Yield

Real yield on 30-year U.S. Treasury Inflation-Protected Securities.

Treasury Active

Country

USD

Frequency

daily

Update cadence

What is US Treasury 30-Year TIPS Yield (US_TIPS_30Y)?

US Treasury 30-Year TIPS Yield is a government treasury yield — the return an investor receives for holding sovereign debt issued by the government. Treasury yields reflect the market's expectations for interest rates, inflation, and economic growth over the instrument's term.

Treasury yields are the benchmark "risk-free rate" used across all asset classes. They anchor corporate bond spreads, discount rates in valuation models, and mortgage pricing. The yield curve (plotting maturities from 1-month to 30-year) is one of the most-watched economic indicators, with inversions historically preceding recessions.

Reflects market inflation expectations
Inverted yield curve is a recession predictor
Used as discount rate in DCF models
Drives corporate bond credit spreads

Uses and Related Industries

Primary Industries

Asset Management: Benchmark for fixed-income fund performance and portfolio duration targeting.

Insurance & Pension: Liability matching, solvency capital calculation, and long-duration ALM.

Corporate Treasury: Optimal debt issuance timing and hedging interest rate exposure on long-term debt.

Equity Valuation: Risk-free rate input in CAPM, DCF models, and equity option pricing (Black-Scholes).

Government & Fiscal Policy: Sovereign debt cost tracking and budget deficit financing strategy.

Specific Applications

Credit spread benchmarking for investment-grade and high-yield bonds
Yield curve construction (bootstrapping from T-bill to 30Y)
Duration hedging using Treasury futures and interest rate swaps
Real yield calculation (nominal yield minus inflation breakeven)
Recession probability modeling from yield curve inversions

API Usage Examples for US_TIPS_30Y

Click each endpoint to see the request URL, parameters, and a sample response.

API Request

https://interestratesapi.com/api/v1/latest?api_key=YOUR_API_KEY&symbols=US_TIPS_30Y

Request Parameters

Parameter	Required	Description
api_key	required	Your API key.
symbols	required	Comma-separated symbol codes. E.g. US_TIPS_30Y

Sample Response

{
    "success": true,
    "date": "2026-05-26",
    "rates": {
        "US_TIPS_30Y": 4.25
    },
    "dates": {
        "US_TIPS_30Y": "2026-05-26"
    }
}

API Request

https://interestratesapi.com/api/v1/historical?api_key=YOUR_API_KEY&symbols=US_TIPS_30Y&date=2026-05-26

Request Parameters

Parameter	Required	Description
api_key	required	Your API key.
symbols	required	Symbol code(s). E.g. US_TIPS_30Y
date	required	Date in YYYY-MM-DD format.

Sample Response

{
    "success": true,
    "historical": true,
    "date": "2026-05-26",
    "rates": {
        "US_TIPS_30Y": 4.25
    }
}

API Request

https://interestratesapi.com/api/v1/timeseries?api_key=YOUR_API_KEY&symbols=US_TIPS_30Y&start_date=2026-05-03&end_date=2026-06-02

Request Parameters

Parameter	Required	Description
api_key	required	Your API key.
symbols	required	Symbol code(s). E.g. US_TIPS_30Y
start_date	required	Start date (YYYY-MM-DD).
end_date	required	End date (YYYY-MM-DD).

Sample Response

{
    "success": true,
    "symbols": [
        "US_TIPS_30Y"
    ],
    "rates": {
        "2026-05-03": {
            "US_TIPS_30Y": 4.25
        },
        "2026-06-02": {
            "US_TIPS_30Y": 4.25
        }
    }
}

API Request

https://interestratesapi.com/api/v1/fluctuation?api_key=YOUR_API_KEY&symbols=US_TIPS_30Y&start_date=2026-05-03&end_date=2026-06-02

Request Parameters

Parameter	Required	Description
api_key	required	Your API key.
symbols	required	Symbol code(s). E.g. US_TIPS_30Y
start_date	required	Start date (YYYY-MM-DD).
end_date	required	End date (YYYY-MM-DD).

Sample Response

{
    "success": true,
    "fluctuation": {
        "US_TIPS_30Y": {
            "start_rate": 4.25,
            "end_rate": 4.37,
            "change": 0.12,
            "change_pct": 2.8235
        }
    }
}

API Request

https://interestratesapi.com/api/v1/ohlc?api_key=YOUR_API_KEY&symbols=US_TIPS_30Y&start=2026-05-03&end=2026-06-02&period=monthly

Request Parameters

Parameter	Required	Description
api_key	required	Your API key.
symbols	required	Symbol code. E.g. US_TIPS_30Y
start	required	Start date (YYYY-MM-DD).
end	optional	End date (YYYY-MM-DD). Defaults to today.
period	optional	Grouping: monthly (default), weekly, quarterly.

Sample Response

{
    "success": true,
    "symbol": "US_TIPS_30Y",
    "period": "monthly",
    "ohlc": [
        {
            "period": "2026-05",
            "open": 4.25,
            "high": 4.5,
            "low": 4.15,
            "close": 4.37,
            "data_points": 21
        }
    ]
}

API Request

https://interestratesapi.com/api/v1/convert?api_key=YOUR_API_KEY&from=US_TIPS_30Y&to=FED_FUNDS&amount=1

Request Parameters

Parameter	Required	Description
api_key	required	Your API key.
from	required	Source symbol. E.g. US_TIPS_30Y
to	required	Target symbol. E.g. FED_FUNDS
amount	required	Amount to convert.
term_months	optional	Term in months for interest calculation (default 12).

Sample Response

{
    "success": true,
    "from": "US_TIPS_30Y",
    "to": "FED_FUNDS",
    "amount": 1,
    "result": 0.981524
}

Replace YOUR_API_KEY with your key Get a free API key →

Factors Influencing US_TIPS_30Y

Market Factors

Government fiscal deficit and debt issuance supply
Inflation expectations derived from breakeven rates (TIPS spread)
Economic growth outlook and recession risk
Central bank purchases (QE) and balance sheet size

Technical Factors

Foreign central bank and sovereign wealth fund buying
Primary dealer positioning and auction demand metrics
Yield curve shape (steepening/flattening/inversion)
Futures market positioning and roll activity

External Factors

Safe-haven demand during geopolitical or market stress
Federal Reserve QE/QT and balance sheet normalization
Exchange rate dynamics and currency intervention
Sovereign credit rating changes and fiscal sustainability concerns

Other rates from US

FED_FUNDS

Federal Funds Effective Rate

FED_FUNDS_DAILY

Federal Funds Effective Rate (Daily)

SOFR

Secured Overnight Financing Rate

US_TREASURY_1M

US Treasury Yield 1-Month

US_TREASURY_3M

US Treasury Yield 3-Month

US_TREASURY_6M

US Treasury Yield 6-Month

Other Treasury rates

US_TREASURY_1Y

US Treasury Yield 1-Year

US_TREASURY_2Y

US Treasury Yield 2-Year

US_TREASURY_5Y

US Treasury Yield 5-Year

US_TREASURY_10Y

US Treasury Yield 10-Year

US_TREASURY_7Y

US Treasury Yield 7-Year

US_TREASURY_20Y

US Treasury Yield 20-Year

Symbol Details

Symbol: US_TIPS_30Y
Category: Treasury
Country: US
Currency: USD
Provider: fred
Frequency: daily
Series ID: DFII30
Unit: percent

Access US_TIPS_30Y via REST API

Get live and historical US Treasury 30-Year TIPS Yield data in JSON format. One API, 50+ countries, normalized.

Get Free API Key View API Docs

GET /api/latest?symbols=US_TIPS_30Y

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