LLC tax checklist for new business owners
The tax work after forming an LLC is not one giant mystery. It is a sequence: know your tax classification, get the right ID numbers, keep clean records, pay as you go, and do not wait until April to find out which forms apply.
First: know how the IRS sees your LLC
An LLC is created under state law, but federal tax treatment depends on the number of members and any elections the LLC makes. A single-member LLC is generally treated as disregarded from its owner for federal income tax purposes unless it elects corporate treatment. A domestic LLC with at least two members is classified as a partnership by default unless it elects corporate treatment.
That classification drives the rest of the checklist. A one-owner consulting LLC, a two-member agency, and an LLC taxed as an S corporation may all look similar on the state website. They do not file the same federal tax paperwork.
1. Get an EIN when the setup needs one
Many LLCs should get an Employer Identification Number early, even when the narrow rule sounds flexible. The IRS says a single-member LLC needs an EIN if it has employees or must file certain excise tax forms. It also says most new single-member LLCs classified as disregarded entities will need to obtain an EIN. Multi-member LLCs normally need one for partnership filing and banking.
For practical setup, the EIN often comes before the business bank account, payroll registration, contractor paperwork, and payment processor setup. Get it directly from the IRS when possible. Do not pay for the EIN itself; it is a free federal number.
2. Open a separate business bank account
This is not just a banking chore. It is a tax-record chore. The IRS recordkeeping page says good records help identify sources of income, track deductible expenses, prepare tax returns, and support items reported on tax returns. A separate business account makes that much easier.
Use the business account for customer deposits and business expenses. Use a business card if you can. Owner draws, reimbursements, capital contributions, and transfers should be labeled clearly enough that you can explain them months later.
3. Pick a bookkeeping system before transactions pile up
The IRS does not require one special recordkeeping system in most cases. It says you may choose any system suited to your business that clearly shows income and expenses. That can be bookkeeping software, a bookkeeper-managed file, or a careful spreadsheet for a very small business.
The system should capture sales, deposits, expenses, receipts, contractor payments, payroll reports, bank reconciliations, loans, owner contributions, and owner withdrawals. If you do not know which categories to use, ask a tax professional early. Rebuilding a chart of accounts after a year of transactions is annoying and often expensive.
4. Plan for estimated taxes
Federal income tax is generally pay-as-you-go. The IRS says individuals, including sole proprietors, partners, and S corporation shareholders, generally have to make estimated tax payments if they expect to owe tax of $1,000 or more when their return is filed. Estimated tax can cover income tax and self-employment tax.
For many LLC owners, this is the first unpleasant surprise. Money in the business bank account is not all spendable. A single-member LLC owner may need to set aside money for income tax and self-employment tax. Partners and S corporation shareholders may also need estimated payments depending on their situation. Use Form 1040-ES guidance or ask a professional if income is uneven.
5. Know the likely federal forms
| LLC setup | Common federal tax form path |
|---|---|
| Single-member LLC, no corporate election | Often reported on the owner's return, commonly Schedule C for a trade or business owned by an individual, plus Schedule SE for self-employment tax when applicable. |
| Multi-member LLC, no corporate election | Partnership information return, Form 1065, with profits and losses passed through to members. |
| LLC taxed as S corporation | Form 1120-S for an entity with an S corporation election, plus payroll and shareholder reporting issues. |
| LLC with employees | Employment tax deposits and reporting, such as withholding, Social Security and Medicare taxes, and federal unemployment tax. |
This table is a starting point, not tax advice. State taxes, local taxes, sales tax, industry taxes, and foreign-owner rules can change the work.
6. Set up payroll before the first paycheck
If your LLC hires employees, payroll is not just moving money. The IRS says employers have responsibilities for federal income tax withholding, Social Security and Medicare taxes, and federal unemployment tax. The SBA's hiring checklist also points business owners toward EINs, state or local tax IDs, W-4s, pay periods, payroll administration, and required records.
Do this before payroll starts. Fixing missed deposits and late filings is much worse than choosing payroll software a week earlier.
7. Track contractors and possible 1099s
If your LLC pays independent contractors, collect the right tax information before you pay them. Form 1099-NEC is used to report nonemployee compensation. Waiting until January to ask every contractor for paperwork is a bad habit.
Also be careful with classification. Calling someone a contractor does not make them one. If the person works like an employee, get advice before you build the wrong system around them.
8. Do a monthly close, even if it is simple
Once a month, reconcile the bank account, attach or save receipts, review uncategorized transactions, invoice late clients, note owner draws, and check your tax set-aside. This does not need to be theatrical. It needs to happen.
A monthly close also makes professional help cheaper. A CPA can review organized books. They have to charge more to untangle twelve months of personal Amazon purchases, vague transfers, and duplicate payment deposits.
9. Add state and local tax tasks
Federal tax is not the whole picture. The SBA notes that common state and local requirements include income taxes and employment taxes, and employees may create state employment tax obligations. Your LLC may also face sales tax, franchise tax, gross receipts tax, annual report fees, city registrations, or industry licenses depending on where it operates.
Put these due dates on the same calendar as federal estimates. The cleanest books in the world will not help if the state dissolves the LLC for a missed filing.
10. Ask for help before the expensive parts
Ask a CPA, enrolled agent, or qualified tax professional before making an S corporation election, adding partners, hiring employees, selling in multiple states, taking investor money, buying significant equipment, or trying to clean up mixed personal and business records.
You do not need to outsource every admin task. You do need to know when a mistake creates payroll penalties, partner disputes, or a return that does not match reality.
Bottom line
A new LLC's tax checklist is mostly about sequence and discipline. Confirm the tax classification. Get the EIN. Separate the money. Keep records. Pay estimated taxes when required. Handle payroll and contractors correctly. Track state obligations. Bring in help before the setup gets complicated.
Do those things early and tax season becomes a reporting job, not an archaeological dig.