IBMP vs MUNC

IBMPAiShares iBonds Dec 2027 Term Muni Bond ETF

MUNCDNorthern Trust 2045 Tax-Exempt Distributing Ladder ETF

In short

IBMP A single rung of a muni ladder in one ticker: investment-grade bonds that all mature in 2027, tax-exempt income paid monthly along the way, and a defined end date instead of a fund that rolls on forever.

MUNC A twenty-rung municipal bond ladder in one ticker. MUNC pays monthly tax-exempt income and hands principal back each year as rungs mature through 2045, so nobody has to shop for individual bonds.

Stated mandate

IBMP The fund seeks to track an index of investment-grade municipal bonds maturing in 2027. It is designed to provide tax-exempt income, support bond-ladder construction, and manage interest-rate risk through a defined maturity.

MUNC The Fund uses an actively managed laddered bond strategy, investing in tax-exempt debt instruments with different maturity dates through 2045.

Why people hold it

• IBMP Built to act like a bond, not a bond fund: the portfolio matures in 2027 and the whole design points at that date, which is what makes ladder-building possible with one trade.ishares.com
• 0.10% a year, right at the typical target-maturity bond fund, and it tracks an AMT-free index, so the tax-exempt income isn't pulled back in by the alternative minimum tax.
• Roughly 1,800 municipal bonds, so no single issuer carries the fund. That spread is hard to replicate buying individual munis one CUSIP at a time.
• Income lands monthly, and this 2027 rung has been running since 2019, so it isn't a fresh launch built for the moment.

• MUNC Buys the whole ladder for you: roughly 150 munis spread across 20 annual rungs running through 2045, with principal returned as each rung matures.flexshares.com
• Interest is exempt from regular federal income tax, and it pays monthly, so income lands on a calendar instead of at scattered coupon dates.flexshares.comnortherntrust.com
• Part of a four-fund suite with 5, 10, 20 and 30 year terminal dates. MUNC is the 20-year version, actively managed by Northern Trust.northerntrust.com
• Cohort favorites like IBDU and BSCT are single-maturity-year term funds. MUNC holds two decades of rungs at once, which is a different job entirely.flexshares.com

Worth knowing

• IBMP The 0.10% fee is the category median, not a discount. Treasury and corporate rungs like IBTJ (0.07%) and VBCB (0.08%) cost less, though neither pays tax-exempt muni income.
• The tax exemption is the entire pitch, and it does no work inside an IRA or 401(k), where the income is already sheltered.
• Trading is moderate rather than heavy, so order size and timing matter more here than in the most heavily traded bond ETFs.

• MUNC 0.18% a year, against a 0.10% median for target-maturity bond funds. That premium buys active muni selection and the ladder plumbing.
• It returns principal annually by design, so the share price steps down over time. Some of each year's cash is your own capital coming back, not yield.northerntrust.comflexshares.com
• Launched in 2025 and still a small, lightly traded fund, so spreads can run wider than at long-established muni ETFs. Matters most on big orders.

Full IBMP profile⁠

Full MUNC profile⁠