Most people put off getting an EIN. It sits on the to-do list under “someday.” Then a bank asks for it. A payroll system blocks you. A state tax website will not let you move forward. Suddenly “someday” turns into ” now.”
An EIN nine-digit number from the IRS. Think of it as a Social Security number for your business. It is free. It takes fifteen minutes to get online. It never expires.
Without one a lot of doors stay shut. Here are eight of them.
1. Open a Business Bank Account
This is the wall most new owners hit. Banks have to know who they are dealing with. For business types that check runs through your EIN. No EIN means no account.
Sole proprietors can sometimes open an account with a Social Security number. It depends on the bank. Many banks have tightened this rule. Most will still ask for an EIN if you want a business debit card, card payment processing or a second person on the account.
Why This Matters
Mixing business and personal money is a habit. It makes your books messy. It makes the tax season slower and more expensive.
It can also hurt you if you have an LLC. The whole point of an LLC is to keep the business separate from you. If a court ever looks at your case one shared bank account can suggest you never kept them separate all.
2. Hire Your First Employee
Once you put someone on payroll the federal government expects reports. You have to hold back income tax from their pay. You have to pay Social Security and Medicare taxes. You have to file employment tax forms.
All of that is tied to your EIN. There is no way around this one. You cannot report payroll taxes under your Social Security number. You cannot put a W-2 in someone’s hands without an EIN on it. The number tells the IRS which business paid the wages.
The Timing Trap
Owners often wait until payday to deal with paperwork. Then everything hits at once. The EIN, the state accounts and the payroll setup all pile up in the week.
Getting the EIN early costs nothing. It also removes the step from that pile.
3. File Business Tax Returns
Some businesses file taxes on the owners return. Sole proprietors and single-member LLCs often do.
Everyone else needs an EIN. Partnerships file with one. Multi-member LLCs file with one. S corporations and C corporations file with one. The number goes at the top of the return. Without it there is no return to send.
Trusts, estates and retirement plan reports use one too.
4. Apply for Business Credit
Lenders look at businesses, not just owners. So when you apply for a business credit card, a line of credit, an equipment loan, or an SBA loan, they ask for your EIN. They use it to check your business credit. They also use it to report your payments back to the business credit bureaus.
Without an EIN, every dollar you borrow is personal debt. It goes on your personal credit report. It counts against you when you apply for a mortgage. And it builds nothing for the company.
That becomes a real problem later. In year three, you want to borrow real money. But the business has no credit history at all.
Time You Cannot Get Back
Business credit gets stronger with age. A company with four years of on-time payments gets much better terms than one starting from zero.
You cannot speed that up. The only way to have four years of history is to start four years earlier. And that clock does not start until you have an EIN.
5. Register for State Taxes
Most state tax offices ask for your EIN first.
Do you sell products? You need a sales tax permit. Do you have employees? You need a state withholding account. In states both forms have a spot for your EIN and you cannot skip it.
This creates a chain reaction. Some states are slow to process registrations. Some suppliers will not sell to you at wholesale prices until you have a sales tax permit. If the EIN is missing the state account waits. The permit waits behind that. So does the supplier account.
6. Get Licenses and Permits
Cities, counties and states use your EIN to identify your business in their records. You will likely see a field for it on business licenses, professional licenses, health permits, contractor registrations and home business permits.
Rules change by place and by industry. Some small local licenses will take a Social Security number instead. The pattern is clear. The more your work is regulated the more likely the EIN is required. Waiting until an inspector asks is not a plan.
7. Set Up Payroll
Payroll companies cannot sign you up without an EIN. They file taxes for you. Those forms need a valid employer number. You will see the field in the few setup steps. The process stops there until you fill it in.
The same goes for services. Workers compensation insurance, employee benefits and retirement plans all use the number.
Contractors Do Not Get You Out of It
Some owners think paying people as contractors solves this. It does not.
You still have to send 1099 forms. Those forms need a payer number. If you use your Social Security number every contractor you pay now has it. So does anyone who does their bookkeeping.
8. Open a Business Retirement Plan
Want a Solo 401(k) a SEP-IRA or a SIMPLE IRA for your business? The provider will ask for an EIN. These accounts belong to the business not to you. The plan papers name the business by its number.
People skip this one all the time. It may be the expensive miss on the list.
A self-employed person, with a Solo 401(k) can shelter more income from taxes than someone stuck with a personal IRA. Missing that for a year is real money gone. The only thing standing in the way is a free form.
Why You Want an EIN Even When You Don’t Need One
Many solo businesses are allowed to run on a Social Security number. That is legal. It is also a habit worth breaking. Einnumber.co’s benefits guide explains why every business should get an EIN, when not legally required.
It comes down to two things. Being ready.
Privacy
Clients who pay you will ask for a W-9. Suppliers who give you credit terms will ask for one. Payment platforms will ask too.
If you have no EIN all of those forms carry your Social Security number. Each copy sits in a file drawer or an inbox you do not control. An EIN gives you a number you can hand out without worry.
Being Ready
Growth rarely gives you notice.
A big client wants to add you as a vendor this week. A good hire is available now. Someone else is interested. A lender has a rate you want to lock in. In each case the EIN is. Already done or it is the thing holding you up.
What It Costs to Get One
Nothing. The IRS does not charge for an EIN no matter how you apply.
The online form takes fifteen minutes. You get the number away. Fax takes a week. Mail takes a month. Most people just apply online. Save the letter the same day.
Have these details ready. The legal name of the business. The mailing address. The state where you operate. Your business type. The responsible person’s name and taxpayer number.
Make sure the business name matches your state paperwork exactly. A small mismatch is the common reason an application gets held up.
Then save your confirmation letter somewhere safe. You will need it more often than you think. Asking the IRS for a copy takes longer than filing the first time.
Frequently Asked Questions
Do I need an EIN if I have no employees?
Not always. You will likely need one to open a business bank account, apply for business credit or start a retirement plan.
Can I just use my Social Security number?
Sole proprietors often can. It puts your personal number on every W-9 and it builds no business credit.
How long does it take to get an EIN?
Online is instant. Fax takes a week. Mail takes a month.
Does an EIN cost money?
No. The IRS never charges for it. Paid services charge for the typing, not the number.
Do I need a new EIN if my business changes?
Sometimes. Changing your business type or owners can require one. A name or address change usually does not.
Also Read: How Glendale Employers Use Contracts to Avoid Providing Employee Benefits






