Commingling funds in a rental LLC: why it matters and how to clean it up

What commingling looks like in a rental LLC

Almost no one does it on purpose. It is a default that happens when the LLC is new and the bank account is not set up yet. Common forms:

• Tenants pay rent to your personal account, or to a different LLC's account.
• The LLC account pays your car insurance, groceries or a vacation.
• You pay a repair with a personal card and never record it.
• Security deposits sit in the same account as operating cash, or in your personal account.
• One bank account serves several properties, each owned by its own LLC.

The last one matters most for investors who follow one LLC per property. Each LLC is its own set of books, as described in one LLC per property, and money should never move between two LLCs without an explicit record.

Why it matters

Three reasons, in order of how often they bite.

1. Your books are wrong. If rent lands in a personal account, the LLC's income is understated unless someone adds it back. If the LLC pays your personal bills, expenses are overstated unless someone removes them. A Schedule E built from that ledger is built on guesses.
2. You cannot prove your deductions. IRS Publication 583 says one of the first things to do when starting a business is open a business checking account, keep it separate from your personal checking account and use it only for business. Supporting documents such as deposit slips, paid bills and canceled checks back up the entries in your books and on your return, and mixed accounts make them harder to match. The source is IRS Publication 583.
3. The LLC's liability protection can be questioned. A common way a person tries to get past an LLC and reach the owner's own assets is to argue that the owner treated the LLC as an extension of themselves, and mixed funds are evidence for that argument. How courts weigh it differs by state, and this post does not cite a single state's statute because the test is mostly a court-made one. Talk to a lawyer licensed in the state where the LLC was formed.

Commingling does not change who owes tax. It changes how well you can show the numbers when someone asks.

How to clean it up, step by step

1. Open a bank account in the LLC's own name and with its own EIN if you have not already. If the LLC needs one, see does a rental LLC need its own EIN.
2. Pull the bank and card statements for every account that touched the LLC this year, personal ones included.
3. List every crossover: each time LLC money paid a personal cost, and each time personal money paid an LLC cost or received LLC rent.
4. Classify each one. LLC money paid a personal cost: an owner draw. Personal money paid an LLC cost: an expense plus an owner contribution. Rent received personally: LLC rent income plus a receivable from the owner, cleared when the money is moved into the LLC account.
5. Record them with dates, and keep the statements as support.
6. Move the money. Transfer any rent still sitting in a personal account into the LLC account, and move deposits into a separate deposit account.
7. Redirect payments: tell tenants the new account details in writing, and be careful that only the owner can change them. A fake bank-change email is covered in fake bank change emails.

Example a made-up LLC finds three crossovers in a year. (1) The LLC account paid $640 of the owner's personal car insurance. (2) The owner paid a $1,250 plumber on a personal card for an LLC unit. (3) One tenant's $1,800 rent was deposited to the owner's personal account. The entries: draw $640 (debit Member draws, credit Checking); repair $1,250 (debit Repairs, credit Member contributions); rent $1,800 (debit Due from owner, credit Rent income). Later the owner moves $1,800 into the LLC account: debit Checking, credit Due from owner. Net result: income is up $1,800 and repairs are up $1,250, so profit is up $550. Contributions of $1,250 less draws of $640 add a net $610 to equity. Every dollar is accounted for.

The record of the owner's side is covered in owner draws vs distributions and recording an owner contribution.

Keep it clean from now on

• Rent goes to the LLC's account and nowhere else. Tell every tenant in writing which account and what to put in the memo.
• Bills for the LLC are paid from the LLC account or card.
• Take money out only by a bank transfer that is recorded as a draw.
• Keep security deposits in their own account where the state requires it, and record them as a liability. See security deposit accounting.
• Reconcile every month. A crossover that shows on the statement shows up while it is small. See bank reconciliation for rental property.

If you already have years of mixed history, ask your tax preparer whether to clean up all years or start from this year with an opening balance. That choice depends on your returns and is theirs to make.

How DoorKeeping handles it

DoorKeeping gives each property its own books, with its own ledger, bank account, deposits held and profit and loss. Tenants pay the owner's own bank with a memo like 12B SMITH and an exact amount with its own cents, and bank feeds match each deposit to the right lease, so a payment that lands in the wrong place shows up. Money never moves between two LLCs' books without an explicit, logged contribution or draw. Rent stays in your own bank: tenants pay you directly and DoorKeeping never holds it. DoorKeeping gives no legal or tax advice, so check the LLC rules with a lawyer in your state and the tax side with your tax preparer.

Sources

1. IRS, Publication 583, Starting a Business and Keeping Records, read Oct 30, 2026
2. IRS, Single member limited liability companies, read Oct 30, 2026

Questions

What is commingling in a rental LLC?

Mixing the LLC's money with the owner's: rent going to a personal account, the LLC paying personal bills, or one account serving several LLCs.

Can I fix commingling after the fact?

Usually yes. List each crossover, record it as a draw, a contribution or rent income with a receivable, move any money still in the wrong account, and keep the statements as support. Ask your tax preparer about prior years.

Does commingling change my taxes?

It does not change who owes tax, but it makes your income and deductions harder to prove. The IRS advises keeping a separate business bank account in Publication 583.