New business

New business formation checklist

A new business needs more than an articles of organization. The entity type, the tax election, the EIN, the state registrations and the bank account all have to agree before the first transaction is booked. This checklist covers what to collect when a client forms a business, so the first-year return does not start with a cleanup.

Who sends itSent by the firm to a client who is forming a new business or has just formed one, before the first bookkeeping or tax engagement begins.

Reviewed November 3, 2026 · 26 items

0 of 26 ticked

Sketch: the new business formation checklist as a client sees it on a phone in UsualNorthside BooksNew businessformation26 items · due FridayEntity typeFormation documentsOperating agreement o…Owners and their…Fiscal year endContinue

01Entity and ownership

02Tax registrations and elections

03Banking and books

04Contracts, insurance and compliance

05First-year planning

What firms get wrong

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Questions about this checklist

Should a new business be an LLC or an S corporation?

The choice depends on the owners, the expected profit, the payroll plan and the state's fees. An LLC is usually simpler to form; an S corporation can reduce self-employment tax but adds payroll and compliance work. The firm should model both before the client elects.

Does a new business need an EIN?

A business generally needs an EIN if it has employees, files a partnership or corporate return, or needs a bank account in the business name. A sole proprietor with no employees may use a Social Security number, but an EIN is often cleaner.

When can a client elect S corporation status?

Form 2553 is generally due by the 15th day of the third month of the tax year the election should take effect. A late election may be allowed with reasonable cause. The firm should check the deadline before the client starts payroll.

What is the first tax return for a new business?

It depends on the entity. A sole proprietor files Schedule C with Form 1040, a partnership files Form 1065, an S corporation files Form 1120-S and a C corporation files Form 1120. The first return covers the tax year, not the formation date.

Does a new business need to register for sales tax?

A business generally needs a sales tax permit if it sells taxable goods or services in a state where it has nexus. The rules differ by state, so check the state where the business operates before the first sale.

Sources

Checked November 3, 2026. Tax rules, forms and thresholds change; confirm them with the IRS or your tax software before relying on them.

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