First business checking and parking LLC cash

Three categories for LLC operating cash: a checking account for bills, an FDIC-insured savings buffer, and Treasury-style parking for money that is not needed this month. No live bank referral links on this page.

Once articles are filed and an EIN exists, operating cash should stop living in a personal checking account. Mixing household rent with client receipts is how a disregarded LLC becomes indistinguishable from the owner when a counterpart, a bank, or a court looks at the statements.

This page describes categories, not a ranked list of banks. Formation Lane has not verified a live publisher or referral program for any business-checking, treasury, or high-yield savings product as of 28 August 2026. There is therefore no outbound referral URL here. Compare fees, APY, and wire cutoffs on the bank’s own site. “Apply on the issuer site” means that — an unlinked name, not a tracking link.

Three places cash can sit

Category	Job	Usual wrapper	What to read before opening
Business checking	Payroll, vendors, card payments, tax drafts	Deposit account in the LLC name at a bank or credit union	Monthly fee, minimum balance, ACH and wire fees, who must guarantee the account
High-yield savings (operating buffer)	One to a few months of expenses that should remain spendable	Savings or money-market deposit account, preferably at an FDIC-insured institution	APY as of the bank’s current posting, transfer limits, whether the product is actually a deposit
Treasury / government cash	Cash not needed for near-term bills	Treasury bills, or a government money-market mutual fund at a brokerage	Settlement timing, SIPC versus FDIC, fund holdings, and that market value can move

Those are different jobs. Sweeping every dollar into the highest advertised yield, then wiring it back to pay a contractor, is how “yield” turns into a missed payroll. Keep a checking balance sized to the payment calendar.

FDIC is not SIPC, and neither is a return

The FDIC’s standard deposit-insurance amount is $250,000 per depositor, per insured bank, per ownership category. Confirm coverage for a specific account on the FDIC’s site; title and category matter. Insurance does not pay interest. It is a cap on loss if the bank fails, not a reason to ignore concentration.

Cash swept into a brokerage money-market fund is generally a security, not a bank deposit. SIPC protection, where it applies, is about missing assets if a brokerage fails. SIPC states that it does not protect against a decline in the market value of securities. A government money-market fund can still have a fluctuating net asset value depending on the fund. Read the prospectus; do not treat “Treasury” as a synonym for “FDIC.”

Treasury bills themselves are obligations of the US government, auctioned and described on TreasuryDirect. Buying them through a brokerage is ordinary. Using a 0% credit-card check to buy them is not — see the 0% page.

What banks will ask for

Typical opening files for an LLC checking account: filed articles, EIN letter from the IRS, identification for the controlling person, and often an operating agreement. Many small-LLC accounts still require a personal guarantee. The guarantee is a credit decision. An LLC name on the debit card does not cancel it.

Online-only business accounts, community banks, and credit unions all exist in this category. This page does not name a current APY or a “best” bank, because those figures move and because Formation Lane has no verified live program to point to. If a later revision adds a named product, the product will be dated, the fee will be cited to the bank’s then-current page, and any paid link will be disclosed next to the link.

A practical parking order

Open business checking in the LLC name. Direct 1099 payers to that account.
Leave enough in checking to cover the next cycle of bills without a fire drill.
Park a stated buffer in an FDIC-insured savings product whose transfer time is understood.
Only then consider Treasury bills or a government money-market fund for the remainder.

Do not park tax money in something that cannot be sold or transferred before the estimated-tax date. The IRS due dates do not wait for a T-bill to mature.