US Taxable Muni Bonds Gaining Prominence Over US Tax-Exempt Muni Bonds

 | Aug 31, 2021 02:28

Basics of taxable/tax-exempt muni bonds

Taxable and tax-exempt municipal (muni) bonds are popular avenues for municipal/local authorities wanting to raise capital to fund public projects such as for constructing roads, schools, sewage systems, airports, public buildings and infrastructure. Tax-exempt muni bonds have traditionally been attractive due to their low borrowing costs vis-à-vis taxable muni bonds with higher costs.

What prompts municipal/local authorities to issue taxable muni bonds despite their high borrowing costs?

The concept of taxable muni bonds is not new, although due to the high borrowing costs on the issuance of taxable muni bonds, issuers prefer to borrow funds using tax-exempt bonds. We, therefore, need to understand the rationale behind the surge, which was evident during 2020, with a massive jump of more than 100% in issuance over 2019. Issuance continued to increase in the first six months of 2021, with total taxable issuance of USD53.3bn.
This uptick is attributable primarily to two factors:

  • Annual cap on tax-exempt muni bond issuance and flexibility: The different states have different limits on the maximum annual issuance of tax-exempt bonds, leaving no headroom to fund high-value projects. Taxable muni bonds come to the rescue in such circumstances. In addition, the IRS stipulates that tax-exempt bonds can be issued only to finance “qualified” projects that directly benefit the general public; this creates a further bottleneck, which could be resolved by issuing taxable muni bonds. This gives a state the flexibility to even fund high-value projects, including qualified and unqualified ones.

  • Refinancing outstanding muni bonds: The usual practice of the issuing authority is to advance refund deals with higher borrowing costs using tax-exempt bonds with low borrowing costs. This phenomenon changed after the introduction of the Tax Cuts and Jobs Act of 2017, which discourages advance refunding through tax-exempt bonds. In addition, in the low interest rate scenario, the borrowing costs of taxable bonds are only marginally higher, further boosting issuance of taxable muni bonds.