Northern Mariana Islands business filing due dates

The Northern Mariana Islands deadlines Ordexly tracks for Oct 2026 to Oct 2027. Every date links to the agency page it was checked against (last checked ). Which ones apply to a business depends on its registrations and filing frequency, so confirm with the agency.

Annual reports & franchise tax

DueDeadlineSource
Northern Mariana Islands Annual Corporation Report 2027
Late fee (per the official source): When March 1 falls on a weekend the Registrar accepts it the next business day without penalty.		official source

Sales & use tax

DueDeadlineSource
Northern Mariana Islands OS-3105 business gross revenue tax return (monthly) Sep 2026official source
Northern Mariana Islands OS-3105 business gross revenue tax return (monthly) Oct 2026official source
Northern Mariana Islands OS-3105 business gross revenue tax return (monthly) Nov 2026official source
Northern Mariana Islands OS-3105 business gross revenue tax return (monthly) Dec 2026official source
Northern Mariana Islands OS-3105 business gross revenue tax return (monthly) Jan 2027official source
Northern Mariana Islands OS-3105 business gross revenue tax return (monthly) Feb 2027official source
Northern Mariana Islands OS-3105 business gross revenue tax return (monthly) Mar 2027official source
Northern Mariana Islands OS-3105 business gross revenue tax return (monthly) Apr 2027official source
Northern Mariana Islands OS-3105 business gross revenue tax return (monthly) May 2027official source
Northern Mariana Islands OS-3105 business gross revenue tax return (monthly) Jun 2027official source
Northern Mariana Islands OS-3105 business gross revenue tax return (monthly) Jul 2027official source
Northern Mariana Islands OS-3105 business gross revenue tax return (monthly) Aug 2027official source

Payroll & withholding

DueDeadlineSource
Northern Mariana Islands Census of Employment (Total Workforce Listing) to the CNMI Department of Labor (quarterly) Q3 2026official source
Northern Mariana Islands OS-3705 employer's quarterly withholding tax return (quarterly) Q3 2026official source
Northern Mariana Islands Census of Employment (Total Workforce Listing) to the CNMI Department of Labor (quarterly) Q4 2026official source
Northern Mariana Islands OS-3705 employer's quarterly withholding tax return (quarterly) Q4 2026official source
Northern Mariana Islands Census of Employment (Total Workforce Listing) to the CNMI Department of Labor (quarterly) Q1 2027official source
Northern Mariana Islands OS-3705 employer's quarterly withholding tax return (quarterly) Q1 2027official source
Northern Mariana Islands Census of Employment (Total Workforce Listing) to the CNMI Department of Labor (quarterly) Q2 2027official source
Northern Mariana Islands OS-3705 employer's quarterly withholding tax return (quarterly) Q2 2027official source

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Nearby: Guam due dates · Puerto Rico due dates · U.S. Virgin Islands due dates

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Federal due dates · All states · Northern Mariana Islands coverage details