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Variable-Rate Demand Bond

August 24, 2024 Fixed Income

A variable-rate demand bond resets frequently and includes a demand or tender feature, often giving long-term municipal debt short-rate behavior.

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A variable-rate demand bond is a bond whose interest rate resets frequently and whose documents may allow holders to tender the bond for purchase at par on specified dates or notice periods. In municipal markets, these instruments are often discussed as variable-rate demand obligations (VRDOs) and can combine long legal maturities with short interest-rate periods.

Key Takeaways

  • A variable-rate demand bond is not just a long bond with a floating coupon; the tender or put feature is central.
  • Rates often reset daily, weekly, or at another short interval through remarketing or document formulas.
  • Liquidity depends on remarketing, any letter of credit or standby purchase agreement, issuer provisions, and support-provider credit.
  • The bond can still carry credit risk, tax risk, liquidity risk, call or mandatory-tender risk, and failed-remarketing risk.

How It Works

$$ \text{Reset Rate} \approx \text{Rate Needed To Remarket Near Par} $$

The remarketing agent typically seeks a reset rate that allows tendered bonds to be resold. If holders tender bonds and no buyer is immediately available, a liquidity facility may be drawn under its terms. The liquidity provider’s obligation may be limited, conditional, expiring, or terminable, so the official statement and related facility documents matter.

What To Verify

ItemWhy It Matters
Rate modeDaily, weekly, term, index, or other modes can change behavior.
Tender rightDetermines whether the holder can put the bond and on what notice.
Remarketing agentSets or helps determine the reset rate and resale process.
Liquidity providerMay fund tenders if remarketing fails.
Bank-bond termsCan change rates, amortization, or issuer obligations after a failed remarketing.
Tax statusMunicipal tax treatment may affect after-tax yield and suitability.
Mandatory tender or conversionCan force a holder out or change the rate mode.

Practical Example

A hospital authority issues a 30-year municipal variable-rate demand bond with weekly resets and a bank liquidity facility. The investor may think of it as short-duration because the coupon resets and the bond can be tendered. The real analysis still includes hospital revenue risk, bank support, remarketing performance, tax status, and what happens if the liquidity facility expires.

VRDB vs. Nearby Terms

TermMain Difference
Variable-Rate BondBroader bond label; may or may not have a demand feature.
Variable-Rate Demand NoteNote-labeled demand instrument; mechanics may be similar but documents govern.
Auction Rate SecuritiesRate resets through auctions and generally lacks the same holder liquidity support.
Floating-Rate NoteUsually benchmark-plus-spread debt without a municipal-style demand feature.

Common Mistakes

  • Assuming the tender feature removes all market and credit risk.
  • Ignoring the liquidity provider’s credit and facility expiration date.
  • Treating a long legal maturity as irrelevant because the rate resets weekly.
  • Comparing taxable and tax-exempt yields without after-tax analysis.
  • Assuming all trades outside the demand feature will occur at par.

Public Source Checks

FAQs

Why can a long-term variable-rate demand bond feel short term?

The rate can reset frequently and the holder may have a tender right, so its economic behavior can be much shorter than its legal final maturity.

What can go wrong with a variable-rate demand bond?

Issuer stress, support-provider stress, failed remarketing, liquidity-facility expiration, tax changes, mandatory tender events, or poor secondary-market liquidity can all change the risk profile.
Revised on Sunday, June 21, 2026
Variable-Rate Bond
Variable-Rate Demand Note