rr_ProspectusLineItems

dei_DocumentPeriodEndDate

Oct. 19, 2023

Entity Central Index Key

dei_EntityCentralIndexKey

0001426439

Amendment Flag

dei_AmendmentFlag

false

Document Effective Date

dei_DocumentEffectiveDate

Jan. 18, 2024

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

Supplement dated October 19, 2023 (“Supplement”) to the

Fund’s Summary Prospectus and Prospectus,

each dated August 31, 2023

Important Notice Regarding Changes to the Fund

Capitalized terms and certain other terms used in this Supplement, unless otherwise defined in this Supplement, have the meanings assigned to them in the Summary Prospectus and Prospectus.

At a meeting held on October 18, 2023, the Board of Trustees (“Board”) of IndexIQ Active ETF Trust (“Trust”) considered and approved, among other related proposals: (i) appointing MacKay Shields LLC (“MacKay Shields”) as the Fund’s subadvisor and the related subadvisory agreement, subject to shareholder approval; (ii) changing the Fund’s name; (iii) a modification to the Fund’s investment strategy; (iv) the operation of the Fund in accordance with updated exemptive relief regarding the hiring and termination of affiliated subadvisors; and (iv) filing proxy materials. These changes are expected to become effective on or about January 18, 2024, if shareholders of the Fund approve item (i) above (the “Proposal”) prior to that date.

As a result, effective on or about January 18, 2024, the following changes will be made to the Summary Prospectus and Prospectus if shareholders approve the Proposal prior to that date:

Prospectus [Line Items]

rr_ProspectusLineItems

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

a.

In the first paragraph of the section entitled “Principal Investment Strategies" in the Summary Prospectus and Prospectus, the third, fourth and fifth sentences are deleted in their entirety and replaced with the following:

If NRSROs assign different ratings for the same security, the Fund will use the higher rating for purposes of determining the credit quality. Debt securities in which the Fund may invest include all types of debt obligations such as U.S. government securities (including Treasury notes, and obligations, such as repurchase agreements, secured by such instruments), agency securities, corporate bonds, municipal bonds, instruments of non-U.S. issuers, asset-backed securities (“ABS”) (including collateralized debt and loan obligations, residential mortgage-backed securities, and commercial mortgage-backed securities), commercial paper, debentures, floating rate bonds, and convertible corporate bonds.

b.

The following is added to the end of the first paragraph of the section entitled “Principal Investment Strategies” in the Summary Prospectus and Prospectus:

The Fund may invest up to 10% of its net assets in underlying funds, including exchange-traded funds (ETFs), mutual funds and closed-end funds. The Fund may also invest in derivatives, such as futures, forwards, treasury futures, options, forward commitments and swap agreements, including interest rate, total return and credit default swaps to seek to enhance returns or reduce the risk of loss by hedging certain of its holdings or manage duration. The Fund generally expects to hedge any foreign currency exposure back to U.S. dollars.

Risk [Text Block]

rr_RiskTextBlock

Exchange Traded Products Risk

Unlike an investment in a mutual fund, the value of the Fund’s investment in other exchange-traded funds or exchange-traded investment products (“ETPs”) is based on its market price (rather than NAV) and the Fund could lose money due to premiums/discounts of the ETP (which could cause the Fund to buy shares at market prices that are higher than their value or sell shares at market prices that are lower than their value); the failure of an active trading market to develop; or exchange trading halts or delistings. An investment in the Fund will entail more costs and expenses than a direct investment in any underlying ETP. As the Fund’s allocations to underlying ETPs changes, or the expense ratio of underlying ETPs change, the operating expenses borne by the Fund from such investments may increase or decrease. Federal law prohibits the Fund from acquiring investment company shares, including shares of other registered investment companies (including ETFs), in excess of specific thresholds unless exempted by rule, regulation or exemptive order. These prohibitions may prevent the Fund from allocating its investment in an optimal manner.

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

General Obligation Bonds Risk — timely payments depend on the issuer’s credit quality, ability to raise tax revenues and ability to maintain an adequate tax base;

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Private Activity Bonds Risk — municipalities and other public authorities issue private activity bonds to finance development of industrial facilities for use by a private enterprise, which is solely responsible for paying the principal and interest on the bonds, and payment under these bonds depends on the private enterprise’s ability to do so;

Prospectus [Line Items]

rr_ProspectusLineItems

Risk [Text Block]

rr_RiskTextBlock

Municipal Notes Risk — municipal notes are shorter-term municipal debt obligations that pay interest that is, in the opinion of bond counsel for the issuer at the time of issuance, generally excludable from gross income for federal income tax purposes (except that the interest may be includable in taxable income for purposes of the federal alternative minimum tax) and that have a maturity that is generally one year or less. If there is a shortfall in the anticipated proceeds, the notes may not be fully repaid and the Fund may lose money; and

Prospectus [Line Items]

rr_ProspectusLineItems