Note 1 - Organization and Description of Business	12 Months Ended
Sep. 30, 2020
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	NOTE 1. ORGANIZATION AND DESCRIPTION OF BUSINESS National Holdings Corporation (“National” or the “Company”), a Delaware corporation organized in 1996, operates through its wholly-owned subsidiaries which principally provide financial services. Through its broker-dealer and investment advisory subsidiaries, the Company ( 1 ) offers full service retail brokerage and investment advisory services to individual, corporate and institutional clients, ( 2 ) provides investment banking, merger, acquisition and advisory services to high-growth micro-, small- and mid-cap companies and ( 3 ) trades securities, including making markets in micro- and small-cap stocks listed on the Nasdaq Capital Market (“Nasdaq”) and other exchanges. The Company's broker-dealer subsidiaries are National Securities Corporation (“NSC”) and Winslow, Evans & Crocker, Inc. (“WEC”). NSC conducts a national securities brokerage business through its main offices in New York City, New York and Boca Raton, Florida. NSC is an introducing broker and clears all transactions through clearing organizations on a fully disclosed basis. WEC is a Boston-based, full-service investment firm established in 1991. NSC and WEC are registered with the Securities and Exchange Commission (“SEC”) and are members of the Financial Industry Regulatory Authority (“FINRA”), Municipal Securities Rulemaking Board (“MSRB”) and the Securities Investor Protection Corporation (the “SIPC”). Our wholly-owned subsidiary, National Asset Management, Inc., a Washington corporation (“NAM”), is a federally-registered investment adviser providing asset management advisory services to retail clients for a fee based upon a percentage of assets managed. Our wholly-owned subsidiaries, National Insurance Corporation., a Washington corporation (“National Insurance”) and Prime Financial Services, a Delaware corporation (“Prime Financial”), provide fixed insurance products to their clients, including life insurance, disability insurance, long-term care insurance and fixed annuities. Our wholly-owned subsidiary, National Tax and Financial Services, Inc. (“National Tax”) formerly Gilman Ciocia, Inc., provides tax preparation and accounting services to individuals and small to midsize companies. Our wholly-owned subsidiary, GC Capital Corporation (“GC”), provides licensed mortgage brokerage services in New York and Florida. Our wholly-owned subsidiary, Winslow, Evans & Crocker Insurance Agency, Inc., a Massachusetts corporation (“WIA”), provides fixed insurance products to its clients, and our wholly-owned subsidiary, Winslow Financial, Inc., a Massachusetts corporation (“WF”), is an SEC Registered Investment Advisor. Our wholly-owned subsidiary, United Advisors, LLC, a New Jersey limited liability company (“UA”), is a New York-based, advisor and wealth management firm. United Advisor Services, LLC, a New Jersey limited liability company (“UAS”), is an SEC Registered Investment Advisor, and Financial Services International Corporation, a Washington corporation (“FSIC”), is a FINRA registered broker-dealer.

NOTE

ORGANIZATION AND DESCRIPTION OF BUSINESS

National Holdings Corporation (“National” or

the “Company”), a Delaware corporation organized in

1996,

operates through its wholly-owned subsidiaries which principally provide financial services. Through its broker-dealer and investment advisory subsidiaries, the Company (

) offers full service retail brokerage and investment advisory services to individual, corporate and institutional clients, (

) provides investment banking, merger, acquisition and advisory services to high-growth micro-, small- and mid-cap companies and (

) trades securities, including making markets in micro- and small-cap stocks listed on the Nasdaq Capital Market (“Nasdaq”) and other exchanges. The Company's broker-dealer subsidiaries are National Securities Corporation (“NSC”) and Winslow, Evans & Crocker, Inc. (“WEC”). NSC conducts a national securities brokerage business through its main offices in New York City, New York and Boca Raton, Florida. NSC is an introducing broker and clears all transactions through clearing organizations on a fully disclosed basis. WEC is a Boston-based, full-service investment firm established in

1991.

NSC and WEC are registered with the Securities and Exchange Commission (“SEC”) and are members of the Financial Industry Regulatory Authority (“FINRA”), Municipal Securities Rulemaking Board (“MSRB”) and the Securities Investor Protection Corporation (the “SIPC”).

Our wholly-owned subsidiary, National Asset Management, Inc., a Washington corporation (“NAM”), is a federally-registered investment adviser providing asset management advisory services to retail clients for a fee based upon a percentage of assets managed.

Our wholly-owned subsidiaries, National Insurance Corporation., a Washington corporation (“National Insurance”) and Prime Financial Services, a Delaware corporation (“Prime Financial”), provide fixed insurance products to their clients, including life insurance, disability insurance, long-term care insurance and fixed annuities.

Our wholly-owned subsidiary, National Tax and Financial Services, Inc. (“National Tax”) formerly Gilman Ciocia, Inc., provides tax preparation and accounting services to individuals and small to midsize companies.

Our wholly-owned subsidiary, GC Capital Corporation (“GC”), provides licensed mortgage brokerage services in New York and Florida.

Our wholly-owned subsidiary, Winslow, Evans & Crocker Insurance Agency, Inc., a Massachusetts corporation (“WIA”), provides fixed insurance products to its clients, and our wholly-owned subsidiary, Winslow Financial, Inc., a Massachusetts corporation (“WF”), is an SEC Registered Investment Advisor.

Our wholly-owned subsidiary, United Advisors, LLC, a New Jersey limited liability company (“UA”), is a New York-based, advisor and wealth management firm. United Advisor Services, LLC, a New Jersey limited liability company (“UAS”), is an SEC Registered Investment Advisor, and Financial Services International Corporation, a Washington corporation (“FSIC”), is a FINRA registered broker-dealer.