Skip to main content
Tax Year
Delaware eCorp Portal
DelawareTaxCalcFranchise Tax & Governance
Delaware Division of Corporations Database Guide

Delaware Business Entity Search & Name Availability Guide

Whether you are verifying your company's official 7-digit Delaware File Number, checking Good Standing status, or registering a new startup name, use this guide to navigate the state's public records database.

Delaware File Number vs IRS EIN Format Checker

Instant Validation

Test your company identification number before filing annual reports. Avoid the common mistake of entering a 9-digit IRS Federal EIN instead of Delaware's 7 or 8-digit state file number.

Official Delaware General Information Name Search

Access the free public database operated by the Delaware Department of State.

Open Delaware Name Search

1. How to Find Your 7-Digit Delaware Entity File Number

To pay your Annual Franchise Tax or file an Annual Report on corp.delaware.gov/paytaxes, you must have your 7-digit Delaware Business Entity File Number.

  1. Navigate to the official Entity Search portal.
  2. Enter your exact corporate name (or partial name).
  3. Click Search. Your 7-digit File Number will be displayed in the results table next to your entity name.

2. Delaware Statutory Corporate Naming Rules (8 Del. C. § 102)

Under Delaware General Corporation Law § 102(a)(1), the name of every Delaware corporation must satisfy strict statutory conditions:

Mandatory Corporate Suffix: Must contain one of the following words (or abbreviation): Association, Company, Corporation, Club, Foundation, Fund, Incorporated, Institute, Society, Union, Syndicate, or Limited (e.g., Inc., Corp., Co., Ltd.).
Distinguishability Requirement: Must be distinguishable upon the records in the office of the Secretary of State from the names of all other active domestic or foreign entities.
Restricted Words: Words such as Bank, Trust, or University require special regulatory approval before filing.

3. Reserving a Name in Delaware ($75 State Fee)

If you have conceived a company name but are not yet ready to file your Certificate of Incorporation, you can reserve the name for 120 days with the Delaware Secretary of State. The statutory fee for reserving a corporate name is $75.00.

Have your Entity Number? Calculate Your Tax

Recalculate your franchise tax before submitting to avoid the default $85k notice.

Calculate Tax Now
Delaware Corporate Compliance Partners

Need Help Filing Your Delaware Annual Report?

Avoid costly miscalculations, late penalties ($200 + 1.5% interest), or loss of Good Standing with verified partners.

Top Rated
NW

Northwest Registered Agent

Delaware Registered Agent & Annual Report Filing

Top privacy-first registered agent in Delaware. They can handle your annual report filing directly with the Division of Corporations, ensuring you use the Assumed Par Value method.

  • Never miss March 1 / June 1 deadlines
  • Instant mail forwarding & local address
  • $125/yr Delaware Registered Agent service
Get Northwest Filing Support
FB

Firstbase Agent & Tax

Automated Startup Compliance Hub

Complete automated state compliance and Delaware annual report management for venture-backed founders and global remote companies.

  • Automated Franchise Tax calculation
  • Maintains Certificate of Good Standing
  • 50-State multi-jurisdiction tracking
Explore Firstbase Compliance
DO

Doola Total Compliance

Bookkeeping, IRS & Delaware Filings

Ideal for international and US founders. Doola pairs you with dedicated CPAs to handle your IRS Form 1120 and Delaware franchise tax filing simultaneously.

  • Dedicated CPA & bookkeeping team
  • Extracts Form 1120 Sched. L Gross Assets
  • Zero penalty guarantee
Explore Doola CPA Service
Affiliate Disclosure: We may receive affiliate compensation from partner services listed above at no additional cost to you. We only recommend providers who support Delaware corporate compliance and accurate statutory calculations.