How to Register as a Vendor in Delaware

Where: Delaware eSupplier Portal (plus the free Delaware Notification Service for bid alerts)
Cost: Free (no registration fee stated; bid notification service is described as free)
How long: unknown
Last checked: 2026-09-27

What it's for

Delaware posts state solicitations (RFIs, RFQs, ITBs, RFPs) in one public Bid Solicitation Directory at bids.delaware.gov (mmp.delaware.gov/Bids). Separately, every supplier must register in the eSupplier Portal. The state says it "does not accept IRS Form W-9, instead all suppliers are required to register through the eSupplier Portal." That creates your official state supplier record so you can be awarded work and paid.

Have this ready

Taxpayer ID (EIN, or SSN for a sole proprietor) and legal name exactly as the IRS has it. The state verifies your TIN with the IRS.
Business address and contact information
An email address for bid alerts and account notices
Payment/banking details may be requested for your supplier record; the exact list is in the state's eSupplier "New Supplier Registration Guide," which could not be read for this guide
A list of your industries/business areas for the notification service

Steps

Register in eSupplier. Go to esupplier.erp.delaware.gov and use the new supplier registration. Follow the state's New Supplier Registration Guide (linked from the portal's help guides) for screen-by-screen detail.
Submit and wait for IRS TIN verification. Once verified, your official supplier record is created.
Sign up for bid alerts. Register with the free Delaware Notification Service (linked from the bid directory) and choose your areas of business interest. The state posts a step-by-step subscriber guide.
Find bids in the Bid Solicitation Directory. Each solicitation explains how to respond. Online bidding does not apply to all solicitations, so read the instructions for each one.
Submit your response the way the solicitation specifies, by its deadline.

After you register

Watch your email for alerts in your chosen categories.
To change your supplier record (address, contacts, etc.), log in to eSupplier and submit a change request. Suppliers who existed before the portal must first set up a user ID.
Help: Supplier Maintenance, 302-672-5000 or FSF_Supplier_Maintenance@delaware.gov.
Check contracts.delaware.gov for current state contracts and pricing.
Renewal requirements were not stated on official pages checked.

Watch out for

Two sign-ups: eSupplier (supplier record) and the Notification Service (alerts) are separate. Doing only one leaves a gap.
Construction and DOT are separate: DelDOT posts construction bids on its own Competitive Bids page (deldot.gov/Business/bids), and some Division of Facilities Management construction and professional-services bids use Bonfire (dfm.bonfirehub.com), which states there is no cost to register.
Schools, municipalities, and fire companies often buy on their own. Contact their procurement officers directly.
Paid third-party "registration services" are unnecessary. The state's registration and alerts are free.

Certifications and bid preferences in Delaware

Delaware Office of Supplier Diversity certification (MBE, WBE, VOBE, SDVOBE, IWDBE, Small Business Focus)

Standard bid forms for Delaware

These are the forms bidders are most often asked to sign or attach on Delaware state bids. Each bid lists exactly which ones it needs, and many agencies attach their own copies, so always use the version in the bid documents when there is one.

Non-Collusion Statement (ITB attachment) Notarized

A sworn, notarized statement that you did not collude with other bidders to fix prices or rig the bid.

When: State agency invitations to bid (ITBs); required with the original bid

Invitation to Bid (ITB) template with bid reply form

The state's standard ITB document, including the bid reply form where you enter pricing; each solicitation supplies its own copy to complete.

When: State agency ITBs for goods and services

Subcontractor Information (ITB attachment)

Lists the subcontractors you plan to use and what they will do.

When: Only if you use subcontractors

Business References (ITB attachment)

Three current or past customers the state can call to check your work.

When: State agency ITBs that require references

Bid Bond

A surety guarantee that you will sign the contract at your bid price if you win.

When: Public works / construction bids that require bid security

Performance Bond

A surety guarantee that you will finish the work as the contract requires.

When: Public works contracts that require a performance bond (after award)

Delaware Business License (Resident or Non-Resident Contractor Package)

Delaware Division of Revenue license issued through One Stop; many bids require a copy with your bid or proof you applied.

When: Anyone doing contracting business in Delaware; copy required with many state bids

Office of Supplier Diversity Certification Application (MBE/WBE/VOBE/SDVOBE/IWDBE and Small Business)

One application to be certified as a diverse or small business so you can claim diversity credit; three-year certification.

When: If you want to bid as a certified diverse or small business

Certified Prevailing Wage Rates Request Form

Requests the official prevailing wage rates for your project type before you bid or start.

When: Public works construction projects covered by Delaware prevailing wage

Certified Payroll Report

Weekly payroll report proving you paid prevailing wage on a public works job.

When: Delaware public works construction contracts subject to prevailing wage

Non-Resident Contractor Bond (or cash bond / letter of credit)

Security a non-Delaware contractor posts with the Division of Revenue to guarantee Delaware tax payments.

When: Out-of-state contractors working in Delaware (a separate letter applies to contracts under $20,000)

Drug Testing Affidavit (DelDOT proposal)

Certifies you and your subcontractors have a mandatory drug testing program for the contract term.

When: DelDOT highway/construction bids (included in the DelDOT proposal package)

Common questions

Is it free to register as a vendor in Delaware?

Free (no registration fee stated; bid notification service is described as free)

Where do I register to bid in Delaware?

Delaware eSupplier Portal: https://esupplier.erp.delaware.gov/

How long does Delaware vendor registration take?

unknown

What forms do I need to bid on Delaware state contracts?

Each bid lists its own forms. Ones bidders are commonly asked for include: Non-Collusion Statement (ITB attachment); Invitation to Bid (ITB) template with bid reply form; Subcontractor Information (ITB attachment); Business References (ITB attachment); Bid Bond. The full list with links to the official blank forms is on this page.

Sources

FindMyBids isn't affiliated with any government agency. Registration is free or low cost on official sites; you don't need to pay a third party. Always follow the official portal's instructions.

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