BlackRock Muni Intermediate Duration Fund : Municipal Closed End Fund Data

					Data as of
					April 30, 2021
	Closed-End Municipal Funds						Economic
			Latest	3 Month	Distribution	3 Month	Leverage
			Declared	Avg Earned	Coverage	Avg UNII	Through VRDP,	Through
		Ticker	Distribution1	Rate2	Ratio3	Balance4	VMTP or ARPS (%)5	TOBs (%)6
	National
	BlackRock Muni Intermediate Duration Fund	MUI	0.054000	0.052868	97.9%	0.085057	28.8%	9.3%
	BlackRock MuniAssets Fund	MUA	0.052500	0.049904	95.1%	(0.019617)	0.0%	11.1%
	BlackRock MuniHoldings Fund	MHD	0.060500	0.059571	98.5%	0.040176	23.4%	14.4%
	BlackRock MuniHoldings Quality Fund II	MUE	0.050500	0.053573	106.1%	0.058060	25.5%	11.7%
	BlackRock MuniVest Fund	MVF	0.033500	0.034128	101.9%	0.014907	24.5%	10.7%
	BlackRock MuniVest Fund II	MVT	0.058500	0.057318	98.0%	0.034517	26.4%	10.9%
	BlackRock MuniYield Fund	MYD	0.056000	0.055976	100.0%	(0.007435)	22.6%	13.1%
	BlackRock MuniYield Quality Fund III	MYI	0.051500	0.054155	105.2%	0.051309	21.6%	14.8%
	BlackRock MuniYield Quality Fund	MQY	0.063000	0.051462	81.7%	0.041641	23.3%	13.9%
	BlackRock MuniYield Quality Fund II	MQT	0.054000	0.053765	99.6%	0.052389	22.1%	15.3%
	BlackRock Long-Term Municipal Advantage Trust	BTA	0.050500	0.058235	115.3%	0.067102	25.9%	13.2%
	BlackRock Municipal Income Quality Trust	BYM	0.058000	0.058287	100.5%	0.054329	20.2%	17.8%
	BlackRock Municipal Income Trust II	BLE	0.062000	0.050535	81.5%	0.042492	25.1%	13.9%
	BlackRock Municipal Income Trust	BFK	0.058500	0.054231	92.7%	0.055187	25.3%	13.0%
	BlackRock Investment Quality Municipal Trust	BKN	0.068000	0.065120	95.8%	0.102974	26.9%	11.6%
	BlackRock Municipal Target Term Trust	BTT	0.062400	0.081573	130.7%	0.265163	26.0%	8.1%
	BlackRock MuniHoldings Investment Quality Fund	MFL	0.048500	0.050958	105.1%	0.047969	29.0%	9.7%
	California
	BlackRock MuniHoldings CA Quality Fund	MUC	0.055000	0.055253	100.5%	0.068636	23.8%	14.9%
	BlackRock MuniYield CA Fund	MYC	0.043000	0.046697	108.6%	0.036326	18.8%	18.6%
	BlackRock MuniYield CA Quality Fund	MCA	0.053000	0.056845	107.3%	0.054979	18.1%	21.3%
	BlackRock CA Municipal Income Trust	BFZ	0.043000	0.045328	105.4%	0.038007	20.9%	17.5%
	Michigan
	BlackRock MuniYield MI Quality Fund	MIY	0.056000	0.057778	103.2%	0.080379	31.3%	5.6%
	New Jersey
	BlackRock MuniHoldings NJ Quality Fund	MUJ	0.063000	0.061748	98.0%	0.071840	30.3%	7.9%
	BlackRock MuniYield NJ Fund	MYJ	0.062500	0.064542	103.3%	0.041406	28.9%	8.4%
	New York
	BlackRock MuniHoldings NY Quality Fund	MHN	0.054500	0.053462	98.1%	0.061070	31.2%	8.1%
	BlackRock MuniYield NY Quality Fund	MYN	0.051500	0.050485	98.0%	0.064603	26.4%	12.1%
	BlackRock NY Municipal Income Trust	BNY	0.056500	0.050026	88.5%	0.067040	28.4%	12.6%
	Pennsylvania
	BlackRock MuniYield PA Quality Fund	MPA	0.055000	0.058505	106.4%	0.048933	23.5%	14.8%
	Virginia
	BlackRock VA Municipal Bond Trust	BHV	0.045500	0.044608	98.0%	0.037804	27.9%	11.7%
	Taxable
	BlackRock Build America Bond	BBN	0.117000	0.107836	92.2%	0.027140	32.1%	0.0%

1. Not reflected in 3-month average UNII ending balances.
2. Represents estimated Average Earned Income per share over the past three months, as of 4/30/21
3. Distribution Coverage Ratio is calculated by dividing 3 Month Avg. Earned Rate. by the Latest Declared Distribution
4. Represents an Estimate of Average Undistributed Net Investment Income balance over the past three months, as of 4/30/21
5. Represents % of Total Assets represented by variable rate demand preferred shares, variable muni term preferred shares or auction rate preferred shares outstanding, as of 4/30/21
6. Represents % of Total Assets represented by economic exposure to investment securities through municipal tender option bonds, as of 4/30/21

In tax-exempt funds, income may be subject to state and local taxes, as well as the alternative federal minimum tax.

Capital gains, if any, will be subject to taxes. Income for state specific funds may be exempt from state and local taxes for in-state residents only. The information provided is not tax or investment advice. Each investor's tax and investment considerations may be different.

BlackRock does not provide tax advice. Distributions and yields may be affected by: 1) changes in the portfolio as when bonds paying higher interest rates are called or mature and are replaced by bonds paying lower current interest rates and 2) in the case of leveraged funds, by changes in the variable rate paid by the fund for leverage. Current year distributions are not classified as "Income", "Short-Term Capital Gains", "Long Term Capital Gains",

or "Return of Capital" until calendar year-end and may be paid from non-income sources such as return of capital. Note that closed-end funds often trade at a discount to NAV but may trade at a premium.

All other information is reported by BlackRock as of April 30, 2021. Past performance is no guarantee of future results. The price of fund shares will fluctuate so they may be worth more or less than their original cost.

There is no assurance that a fund will meet its investment objective. The information contained herein represents past performance and is no guarantee of future. results; current performance may be lower or higher than indicated here. Please visit www.blackrock.com for the most up to date information about the funds.

All investors should consider the investment objectives, risks, charges and expenses of the funds carefully before investing. The prospectus for each fund currently offering its securities contains this and other important information about the applicable fund currently offering its securities. Investors can obtain a prospectus for any fund currently offering its securities by calling 800-882-0052. All investors are urged to carefully read the prospectus of any such fund in its entirety before investing. There is no assurance any fund will achieve its objectives. The information contained herein is not complete and may be changed. This document is not an offer to sell a fund's securities and is not soliciting an offer to buy a fund's securities in any jurisdiction where the offer or sale is not permitted.

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