March 14 (Reuters) - BondBloxx, an exchange-traded fund

issuer specializing in bond ETFs, has joined with fixed-income

asset manager Income Research + Management to launch a new ETF

designed to maximize after-tax income on a bond portfolio, the

firms said on Thursday.

The BondBloxx IR+M Tax-Aware Short Duration ETF has

a management fee of 0.35%.

The actively-managed ETF will hold at least half of its

assets in municipal bonds, a classic strategy used by many U.S.

investors to minimize taxable gains, according to regulatory

filings. It will invest the balance in taxable short-duration

bonds, including corporate and asset-backed securities.

According to the filing, managers will invest 80% of total

assets in investment-grade securities.

"There is more to tax-aware investing than municipal bonds,"

Tony Kelly, co-founder of BondBloxx, said in a statement.

"Sometimes paying rather than avoiding taxes can lead to more

advantageous outcomes."

IR+M currently manages $96 billion in fixed income assets

for institutions and the new fund is its first foray into ETFs.

The launch of the ETF brings BondBloxx's total offerings to 24,

according to the firm's website.