When you’re putting personal money into an LLC, every transfer needs a label before it leaves your account: either it’s a capital contribution (equity) or it’s a member loan (debt). That one classification controls how the money is taxed, whether you can pull it back out, and how well your LLC protects you from personal liability. Get the paperwork wrong and a court can treat your LLC as a sham. Get the tax treatment wrong and the IRS can reclassify the transfer in ways that cost you deductions or create income you didn’t expect.
Equity or Loan: Pick One Before You Transfer
The two options are mutually exclusive. A capital contribution is a permanent investment that increases your ownership stake and your capital account balance; you only get it back through profit distributions or when the LLC dissolves. A member loan is a temporary advance that creates a creditor-debtor relationship. The LLC owes you the principal whether or not the business is profitable, but the loan doesn’t change your ownership percentage or voting rights.
Mixing the two up, or failing to document which one you chose, is where most owners get into trouble. The IRS watches member loans closely for signs of disguised equity, so the documentation bar for a loan is higher than for a contribution. Pick one, write it down, and act consistently with the choice.
How to Document a Capital Contribution
Start with the operating agreement. Most agreements spell out how contributions are handled, whether they require member approval, and how they affect ownership percentages. If your contribution shifts anyone’s ownership stake, every member needs to agree to an amendment. That typically means drafting the proposed change, voting on it, and signing a written resolution. If your state required you to list member percentages in your formation documents, you may also need to file an amendment with the secretary of state.
The internal paperwork matters just as much. Draft a Capital Contribution Agreement (or a Member Resolution for a single-member LLC) stating the amount contributed, the date of the transfer, and how it affects capital accounts and ownership percentages. Every member signs it. This is your primary defense in an audit or a veil-piercing lawsuit. Without it, a court can view the transfer as personal funds passing through the LLC rather than a legitimate business investment.
After the transfer clears, update the LLC’s internal ledger to reflect the increase in the contributing member’s capital account. That bookkeeping step connects the bank deposit to the legal documentation and creates the audit trail accountants and courts look for.
When Contributions Shift Ownership
In a multi-member LLC, a contribution that isn’t proportional to existing ownership creates a shift. If you own 50% and make a large additional contribution while your co-member does not, your ownership percentage should increase. The amendment needs to spell out the new split. Failing to adjust ownership when it should change, or changing it without proper documentation, can create gift tax questions and partnership allocation problems that a tax professional should review before you proceed.
Contributing Property Instead of Cash
You can contribute equipment, vehicles, real estate, or other property instead of cash. Under federal tax law, neither you nor the LLC recognizes a gain or loss when you contribute property in exchange for a partnership interest.1Office of the Law Revision Counsel. 26 USC 721 – Nonrecognition of Gain or Loss on Contribution Your tax basis in the property carries over to the LLC, and your capital account increases by the property’s fair market value at the time of contribution.
Documentation for a property contribution is more involved. The agreement should describe the asset, state its fair market value (supported by an appraisal for anything significant), note any liabilities attached to it, and record your adjusted tax basis in the property. If the property carries debt that the LLC assumes, the debt relief can be treated as a distribution to you, which gets complicated quickly. Have your accountant review the numbers before you execute the transfer.
How to Document a Member Loan
If the loan lacks the hallmarks of a real lending arrangement, the IRS can reclassify it as a capital contribution (eliminating any repayment obligation) or as a taxable distribution (creating unexpected income). The single most important document is a formal promissory note, signed by you (as lender) and the LLC (as borrower), on or before the day you transfer the funds.
The note must include terms an unrelated lender would require:
- A fixed principal amount: the exact dollar figure being lent.
- A maturity date: a specific date by which the LLC must repay the full balance.
- A repayment schedule: monthly or quarterly payments of principal and interest, not a vague promise to repay “when able.”
- An interest rate at or above the Applicable Federal Rate. The IRS publishes AFRs monthly, broken into short-term (loans up to 3 years), mid-term (3 to 9 years), and long-term (over 9 years).
For reference, the AFRs for March 2026 with annual compounding are 3.59% for short-term loans, 3.93% for mid-term, and 4.72% for long-term.2Internal Revenue Service. Rev. Rul. 2026-6 – Applicable Federal Rates for March 2026 These rates change monthly, so check the IRS table for the month your loan originates.3Internal Revenue Service. Applicable Federal Rates
Once the note is in place, the LLC has to actually follow it. Make the scheduled payments from the LLC’s bank account to your personal account. If you skip payments, waive interest, or repeatedly push back the maturity date, you’re building the IRS’s case that this was never a real loan. A perfect promissory note sitting in a drawer means nothing if the LLC has never made a single payment on it.
Below-Market Interest
Charging less than the AFR doesn’t just weaken your documentation. Federal law treats the gap between the interest you actually charged and the interest you should have charged at the AFR as a phantom transfer: the IRS treats the “forgone interest” as if you gave that money to the LLC and the LLC paid it back to you as interest. You owe tax on that imputed interest income even though no cash moved.4Office of the Law Revision Counsel. 26 U.S. Code 7872 – Treatment of Loans With Below-Market Interest Rates
There is a narrow de minimis exception: if the total outstanding loans between you and the LLC stay at or below $10,000, the below-market interest rules generally don’t apply to compensation-related and corporate-shareholder loans.4Office of the Law Revision Counsel. 26 U.S. Code 7872 – Treatment of Loans With Below-Market Interest Rates Above that threshold, use the AFR. Setting the rate correctly costs nothing and removes an entire category of IRS risk.
Tax Treatment of the Interest
With the loan properly documented, the tax picture is simple. The interest the LLC pays you is a deductible business expense for the LLC. For you personally, that interest is taxable income on your federal return whether or not you receive a Form 1099-INT.5Internal Revenue Service. Topic No. 403 – Interest Received Principal repayments are not taxable, because repaying a loan isn’t income.
If the LLC pays you $10 or more in interest during the year, it must file Form 1099-INT reporting that amount.6Internal Revenue Service. About Form 1099-INT, Interest Income You get a copy by January 31; the IRS copy is due February 28 (paper) or March 31 (electronic). Smaller LLCs often forget this filing, and the penalties aren’t trivial.
How Your LLC’s Tax Status Changes the Answer
Everything above assumes your LLC is taxed as a partnership, which is the default for multi-member LLCs. If you’ve elected different tax treatment, member funding works differently in ways that catch people off guard.
Single-Member LLCs
If you’re the only member and you haven’t elected corporate tax treatment, the IRS treats your LLC as a disregarded entity.7Internal Revenue Service. Single Member Limited Liability Companies For income tax purposes there’s no separation between you and the LLC, so a “loan” from you to your own single-member LLC has no tax significance. You can’t deduct interest paid to yourself, and you can’t create loan basis in a disregarded entity.
For single-member LLCs, all personal funding is effectively a capital contribution from a tax perspective, no matter what your internal documents call it. The documentation still matters for liability protection and internal bookkeeping. But don’t structure a “loan” to your own disregarded-entity LLC expecting tax benefits from it.
LLCs Taxed as S-Corporations
If your LLC elected S-corporation status, shareholder loan basis works differently than in a partnership. Only direct loans from you to the company increase your debt basis; a bank loan that you merely guarantee does not count. The loan has to flow from your personal account to the company. S-corp debt basis also has a unique restoration rule: if business losses reduce your loan basis, future income restores the loan basis first before increasing your stock basis.8Office of the Law Revision Counsel. 26 U.S. Code 1367 – Adjustments to Basis of Stock of Shareholders, Etc.
Moving the Money
Whichever label you chose, the physical transfer needs to be clean. Move the money directly from your personal bank account to the LLC’s dedicated business account. Don’t hand over cash, don’t run the funds through a third party, and don’t deposit into a shared account. Every transfer should appear as a traceable electronic transaction between two clearly identified accounts.
Immediately after the transfer, record the matching journal entry. For a capital contribution, the entry credits the “Member Capital” account. For a loan, it credits “Notes Payable to Member.” That step links the bank deposit to the underlying legal document, whether that’s the Capital Contribution Agreement or the promissory note. Skip the journal entry and you end up with unexplained deposits that look like commingled funds to a court or an auditor.
Keep everything together as a single transaction package: the signed agreement or promissory note, the bank transfer confirmation, and the journal entry. If you’re ever challenged in a veil-piercing suit, an IRS audit, or a dispute with a co-member, that package is your evidence.
Why Any of This Matters
Basis and Loss Deductions
Your tax basis in the LLC is your total investment for tax purposes, and it caps how much of the LLC’s losses you can deduct on your personal return. If the LLC loses $80,000 in a year but your basis is only $50,000, you can deduct $50,000. The remaining $30,000 carries forward.9Internal Revenue Service. Partners Instructions for Schedule K-1 (Form 1065) – Section: Limitations on Losses, Deductions, and Credits
Both capital contributions and member loans increase your basis, through different mechanisms. Cash contributions increase basis dollar for dollar. For multi-member LLCs taxed as partnerships, member loans increase basis through the liability allocation rules, which generally assign the full amount of a recourse loan to the lending member because that member bears the economic risk of loss.10Office of the Law Revision Counsel. 26 USC 752 – Treatment of Certain Liabilities11eCFR. 26 CFR 1.752-2 – Partners Share of Recourse Liabilities You report your share of the LLC’s income or loss using the information on your Schedule K-1, but the K-1 doesn’t calculate your basis for you.12Internal Revenue Service. Partners Instructions for Schedule K-1 (Form 1065) That calculation is on you and your preparer.
Basis is necessary but not sufficient. You also have to be “at risk” for the amounts you want to deduct. Contributions always count as at-risk. Member loans are trickier: the at-risk rules generally exclude amounts borrowed from someone with an interest in the activity, though an exception for creditor interests can preserve at-risk treatment for the lending member.13Office of the Law Revision Counsel. 26 U.S. Code 465 – Deductions Limited to Amount at Risk
Keeping Your Liability Shield Intact
The practical reason for all this paperwork is veil piercing. When a creditor sues your LLC and suspects there’s no real separation between you and the business, they ask the court to disregard the LLC and hold you personally liable. Courts look for specific signs of commingling: personal expenses paid from the business account, business income deposited into a personal account, and transfers between you and the LLC with no documentation explaining what the money was for.
Documenting every personal-to-business transfer as either a formal contribution or a formal loan eliminates the ambiguity that lets veil-piercing claims succeed. The member who can produce a signed agreement, a ledger entry, and a matching bank record is in a different position than the one who deposited $30,000 with no paperwork and called it “working capital.” The documentation standards above aren’t bureaucratic overhead. They’re the specific evidence courts weigh when deciding whether your LLC deserves the protection it was formed to provide.