0000901243 2026-05-21 2026-05-21 0000901243 1 2026-05-21 2026-05-21 0000901243 2 2026-05-21 2026-05-21 iso4217:USD pure N-2 N-2 EX-FILING FEES 0000901243 BLACKROCK MUNIASSETS FUND, INC. N/A N/A N-2 BLACKROCK MUNIASSETS FUND, INC. false Equity Shares of Common Stock, $0.10 par value true 1000000.00 0.0001381 138.10 false Other Rights to Purchase Shares of Common Stock true 0.0001381 0.00 1000000.00 138.10 0.00 0.00 138.10 Estimated solely for purposes of calculating the registration fee pursuant to Rule 457(o) of the Securities Act of 1933, as amended. No separate consideration will be received by the Registrant. Any shares issued pursuant to an offering of rights to purchase shares of common stock, including any shares issued pursuant to an over-subscription privilege or a secondary over-subscription privilege, will be shares registered under this Registration Statement.