Bookkeeping for an LLC: Accounts, Taxes, and Payroll

Bookkeeping for an LLC comes down to a few non-negotiables: run every dollar through a business-only bank account, record transactions in double-entry software, treat owner money moving in and out as equity rather than income or expense, reconcile every month, and keep the paper trail that both the IRS and a court would expect to see. Do those consistently and your tax filings will be defensible and your liability shield will hold.

Keep Business and Personal Money Separate

The whole reason to form an LLC is the liability shield between business debts and your personal assets. Courts can strip that protection through what’s known as “piercing the corporate veil” when they find an LLC is really just an alter ego of its owner, and mixing personal and business money is one of the most common reasons they do it.1Legal Information Institute. Piercing the Corporate Veil Paying your personal car insurance from the business checking account, or depositing a client check into personal savings, hands a creditor exactly the argument they need.

The fix is simple and not optional. Open a dedicated business bank account and a business credit card, then run every LLC transaction through those accounts and nothing else. When you put personal money into the business or pull money out for yourself, record it the same day as an owner contribution or a draw. Every expense needs a receipt or invoice that shows its business purpose and ties back to a line on the bank statement. That paper trail is what proves the LLC is a genuinely separate entity if anyone challenges it.

Choose Your Accounting Method

Before you record a single transaction, pick an accounting method. This decides when you recognize income and expenses. Two matter for most LLCs.2Internal Revenue Service. Publication 538, Accounting Periods and Methods

Under the cash method, you record income when you actually receive payment and deduct expenses when you actually pay them. It matches how you already think about your bank balance and works well for service businesses.

Under the accrual method, you record income when you earn it and expenses when you incur them, regardless of when money changes hands. Invoice a client in December and get paid in January, and the income belongs to December.

Most LLCs qualify for the cash method. The IRS requires accrual only when a business exceeds the gross receipts threshold (indexed annually, currently in the range of $30 million in average annual receipts over three years) or maintains inventory as a core part of the business.2Internal Revenue Service. Publication 538, Accounting Periods and Methods A consulting firm, a freelance design studio, or a small trades business almost certainly has cash-method access. Whatever you pick, use it consistently year to year; changing later means filing Form 3115 with the IRS.

Set Up Software and a Chart of Accounts

Your accounting method decides when things count. Your bookkeeping system decides how you record them. A solo operation can start with single-entry (a running list of deposits and payments), but double-entry bookkeeping is what any LLC planning to grow needs. Every transaction touches at least two accounts, a debit in one and a credit in another, which keeps Assets = Liabilities + Equity in balance and gives you built-in error detection.

Every modern accounting platform (QuickBooks, Xero, FreshBooks, Wave) runs on double-entry logic. Pick based on your transaction volume and whether you need inventory, payroll, or multi-user access. Which one matters less than using it consistently.

Building the Chart of Accounts

A chart of accounts is the master list of categories your system uses to sort transactions. It covers five types: assets, liabilities, equity, income, and expenses. Your software ships with a default, but you should customize it.

The most useful customization is breaking out expense categories to match potential tax deductions. Instead of dumping everything into “Travel,” create separate accounts for airfare, lodging, and meals. Instead of a generic “Office Expense,” split it into supplies, software subscriptions, and internet service. That granularity means your year-end tax prep pulls straight from the books instead of forcing you to re-sort transactions in April.

Bank Feeds Are a Draft, Not a Result

Most software can connect to your bank and credit card accounts and pull transactions automatically. This saves real time but creates a false sense of accuracy. Duplicates are common when a payment you entered by hand shows up again from the feed a day later. Transfers between your own accounts can appear as both an expense and a deposit if you aren’t watching. Automated categorization gets things wrong, especially before the software learns your patterns. Treat feed imports as a starting point that needs human review.

Record Income, Expenses, and Sales Tax

Day-to-day bookkeeping is really two tasks on repeat: recording money coming in and money going out, both tied to source documents.

Revenue tracking starts with the invoice or sales receipt your LLC issues. That is the source record. When payment lands in the bank, you match the deposit to the invoice. Until then the amount sits in accounts receivable, which represents money owed to you. On the expense side, every debit from the business account or credit card gets matched to a vendor invoice or receipt and posted to the right account. Attach the source document to the entry in your software. If the IRS ever asks, you’ll need to show exactly why each dollar left the account.

Accounts payable is the mirror image: bills you owe that haven’t been paid. Keeping it current lets you catch early-payment discounts and avoid late fees. Together, receivables and payables show you actual working capital rather than a bank balance that doesn’t reflect what’s coming or going.

Sales Tax Is a Liability, Not Revenue

If your LLC sells taxable goods or services, sales tax you collect isn’t your money. It belongs to the state or local tax authority, and you’re holding it temporarily. Record it as a liability using a “Sales Tax Payable” account, completely separate from income accounts. When you remit, you reduce that liability. Treating sales tax as income is one of the fastest ways to end up short at remittance and facing penalties.

Monthly Reconciliation

The single most important recurring task is the monthly bank and credit card reconciliation. Pull the statement, compare every transaction to what your software shows, and resolve every discrepancy. Outstanding checks, bank fees you didn’t enter, duplicate imports, and miscategorized transactions all surface here. Don’t close the month until statement balance and software balance match to the penny. This is the process that catches fraud, errors, and omissions before they compound.

Owner Contributions, Draws, and Capital Accounts

How you record money moving between you and your LLC is what makes LLC bookkeeping different from corporate accounting. Owner contributions and distributions are equity transactions. They belong on the balance sheet, not the profit and loss statement. They aren’t income or expenses. Getting this wrong inflates or deflates reported profit and creates tax headaches.

Single-Member LLCs

As the sole owner, you track two equity accounts: owner contributions (money or assets you put in) and owner draws (money you take out). Put $5,000 of personal savings into the LLC: debit Cash, credit Owner Contributions. Write yourself a check from the business account: debit Owner Draws, credit Cash. Neither shows up on Schedule C as income or expense.3Internal Revenue Service. Instructions for Schedule C (Form 1040) Net business profit flows from Schedule C to your personal Form 1040, and you pay tax on that profit whether you withdrew the money or not.

Multi-Member LLCs Taxed as Partnerships

With more than one owner and partnership taxation, each member needs a separate capital account tracking contributions, share of profits or losses, and distributions. The sum of all member capital accounts equals total equity on the balance sheet.4Internal Revenue Service. Partners Outside Basis

Multi-member LLCs also frequently make guaranteed payments, which are regular payments to a member for services performed for the business, like a managing partner’s monthly amount for running operations. Guaranteed payments are different from distributions. They’re deductible business expenses on the LLC’s Form 1065 and appear as taxable income on the receiving partner’s Schedule K-1.5Internal Revenue Service. IRS Form 1065, U.S. Return of Partnership Income6Internal Revenue Service. Schedule K-1 (Form 1065), Partners Share of Income, Deductions, Credits, etc. Distributions are not deductible and are generally a tax-free return of capital.

That “generally tax-free” has a limit. When cash distributed to a member exceeds that member’s adjusted basis in the partnership, the excess is taxed as a capital gain.7Office of the Law Revision Counsel. 26 U.S. Code 731 – Extent of Recognition of Gain or Loss on Distribution Meticulous capital account tracking is what makes basis calculable. If the books don’t accurately reflect contributions, profit allocations, and prior distributions, someone will over- or underpay tax.

Plan for Self-Employment Tax and Quarterly Estimates

Here is the obligation that blindsides more new LLC owners than any other: self-employment tax. If your LLC is taxed as a sole proprietorship or partnership (the default for most LLCs), the net profit flowing to your personal return isn’t just subject to income tax. You also owe self-employment tax at a combined 15.3%, covering the Social Security and Medicare taxes that an employer would otherwise split with you.8Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes)

The 15.3% breaks down to 12.4% for Social Security and 2.9% for Medicare. The Social Security portion applies only to net earnings up to $184,500 in 2026; the Medicare portion has no cap.9Social Security Administration. Contribution and Benefit Base If net self-employment income exceeds $200,000 (single) or $250,000 (married filing jointly), an additional 0.9% Medicare surtax applies to the excess.10Internal Revenue Service. Instructions for Schedule SE (Form 1040) You calculate SE tax on 92.35% of net earnings and can deduct half of the resulting tax when calculating adjusted gross income.

Your bookkeeping needs to reserve for this in real time, not as a year-end surprise. Build the 15.3% into your profit estimates and set funds aside for quarterly payments.

Quarterly Estimated Tax Deadlines

Because no employer is withholding from your LLC income, you make quarterly estimated payments covering both income tax and self-employment tax. The 2026 dates:

  • 1st quarter: April 15, 2026
  • 2nd quarter: June 15, 2026
  • 3rd quarter: September 15, 2026
  • 4th quarter: January 15, 2027

Pay using Form 1040-ES or the IRS electronic payment options.11Internal Revenue Service. 2026 Form 1040-ES To avoid underpayment penalties, pay at least 90% of the current-year tax liability through estimates and withholding, or 100% of the prior-year tax (110% if prior-year AGI exceeded $150,000). If you owe less than $1,000 after subtracting withholding and credits, no penalty applies regardless.12Internal Revenue Service. Instructions for Form 2210 The current underpayment penalty rate is 7%, calculated daily on each missed installment. If you skip the January 15, 2027 payment and file your 2026 return by February 1, 2027 with the full balance, you avoid the penalty for that quarter.

Payroll and 1099 Records if They Apply

If your LLC has no employees and pays no contractors, this section doesn’t apply to you. If it does, both sides have specific bookkeeping requirements.

Payroll

Payroll bookkeeping runs anytime your LLC has employees, and also when you’ve elected S corporation taxation and pay yourself as an owner-employee. Each payroll run generates multiple entries: gross wages as an expense, employee withholdings for federal and state income tax, the employee’s share of Social Security and Medicare as a liability, and the net paycheck. Then you book the employer’s matching share of Social Security and Medicare plus federal and state unemployment taxes as separate expenses with matching liabilities.

These payroll liabilities must be deposited with the IRS on a schedule (monthly or semi-weekly) determined by your total tax liability, and totals are reported quarterly on Form 941.13Internal Revenue Service. About Form 941, Employers Quarterly Federal Tax Return Late deposits trigger penalties that escalate fast, from 2% for deposits 1 to 5 days late up to 15% for deposits made more than 10 days after an IRS notice. Most LLC owners are better off using a payroll service than handling deposits by hand.

S Corporation Reasonable Compensation

If your LLC has elected S corporation taxation, owner-employees who perform services for the business must receive a reasonable salary, with payroll taxes withheld, before taking any distributions. Courts have consistently held that shareholder-employees who provide more than minor services are subject to employment taxes on appropriate compensation, even when they try to take all their income as distributions.14Internal Revenue Service. S Corporation Employees, Shareholders and Corporate Officers Your books need to clearly separate salary (payroll-taxed) from distributions (not). Setting the salary unreasonably low to shrink payroll taxes is one of the most heavily scrutinized positions on an S corporation return.

1099 Compliance

If your LLC pays independent contractors or other non-employees for services, you have information reporting to do. Collect a Form W-9 from every contractor before you make the first payment. The W-9 gives you their taxpayer identification number and legal name, which you need for information returns.15Internal Revenue Service. About Form W-9, Request for Taxpayer Identification Number and Certification Chasing down W-9s in January, after paying someone thousands of dollars, is a universally miserable experience. Get the form before the first invoice.

For payments made in 2026, you must file Form 1099-NEC for any non-employee to whom you paid $2,000 or more during the year for services performed for your business.16Internal Revenue Service. 2026 Publication 1099 This threshold increased from $600 under legislation effective for tax years beginning after 2025. The deadline is January 31 for both the contractor copy and the IRS copy. Your bookkeeping should tag contractor payments so you can pull a report of who’s near or over the threshold.

Close the Year and File the Right Form

Before generating your final year-end reports, record adjusting entries the day-to-day work misses. On the accrual method, that means booking revenue earned but not billed and expenses incurred but not paid. On cash, adjustments are simpler but still needed: correct misclassified transactions, reconcile owner equity accounts, and confirm every bank and credit card account is reconciled through December 31.

Depreciation and Section 179

If your LLC owns equipment, vehicles, furniture, or other assets with a useful life beyond one year, you generally can’t deduct the full purchase price in the year you buy them. Standard depreciation spreads the cost over the asset’s useful life, and you report it on Form 4562.17Internal Revenue Service. About Form 4562, Depreciation and Amortization The Section 179 deduction is the exception: it lets you expense the full cost of qualifying assets in the year you place them in service.18Internal Revenue Service. Instructions for Form 4562, Depreciation and Amortization For 2026, the Section 179 limit is $2,560,000. Most small LLCs won’t come near that cap. Either way, your books need the purchase date, cost, and business-use percentage for each asset.

Financial Statements

Two reports come out of the year-end close. The profit and loss statement (or income statement) shows revenue minus expenses, producing the net income figure that flows onto your tax return. The balance sheet is a snapshot as of December 31 of what the LLC owns (assets), what it owes (liabilities), and owners’ equity. Together they answer whether the business was profitable and whether it’s financially healthy.

Where the Numbers Land on Your Return

Where your bookkeeping ends up on an IRS form depends entirely on how your LLC is taxed.

Keep the Records

Finishing the year’s bookkeeping doesn’t mean you can delete anything. The IRS requires you to keep records supporting items on your return for as long as they could be relevant to a tax assessment. The general rule is three years from the date you filed. Underreport income by more than 25% of what’s shown on the return, and the IRS has six years. Don’t file at all, or file fraudulently, and there is no time limit.23Internal Revenue Service. Topic no. 305, Recordkeeping

If your LLC has employees, employment tax records must be kept for at least four years after the tax is due or paid, whichever is later.23Internal Revenue Service. Topic no. 305, Recordkeeping For most LLC owners, the safest approach is to keep everything for seven years: receipts, bank statements, invoices, payroll records, and tax returns. Digital storage makes this painless. The cost of keeping records too long is zero. The cost of not having a receipt the IRS asks for is whatever they decide to disallow.