Business Money Has Three Jobs: Float, Reserve, and the Bitcoin Question

Every dollar a small business earns has a date attached to it, whether you write it down or not. Some of it has to be gone by Friday to pay a supplier. Some of it is waiting for the day a machine breaks. And some of it won’t be needed for ten years. The mistake I see most often, and one I think almost everyone makes early on, is keeping all three kinds of money in the same account and treating them as one number.

Where you keep business cash is really a question about when you’ll need it. Answer that first, and the “HYSA or Treasuries or Bitcoin” debate mostly settles itself.

Disclosure: a few links below are affiliate links, so I may earn a commission if you sign up, at no cost to you. I only link to tools I’d use. I’m not a financial advisor and this isn’t financial advice. Rates quoted were checked in late September 2026 and will have moved by the time you read this.

Sort by date, not by return

Here’s the framework I use. Take every dollar in the business and ask: when is the earliest I could realistically need this?

When you might need it	What it is	What it must never do	Where it can sit
This month	Payroll, inventory, rent, loan payments	Be unavailable	Business checking
Sometime in the next 1–24 months	Repairs, a lost customer, a slow season, taxes	Lose value	High-yield savings, Treasury bills
Not for 5+ years	Surplus after the first two are full	Sit idle forever	The next asset, index funds, maybe a small Bitcoin position

Notice the middle column. The question isn’t “what earns the most?” It’s “what’s the one thing this money can’t be allowed to do?” Checking money can’t be locked up. Reserve money can’t drop 30% the week you need it. Long-term money can’t just sit there losing to inflation for a decade. Each bucket has a different failure mode, so each one gets a different home.

The reserve is where the boring math actually adds up

I’ve written before that my personal emergency fund earns almost nothing on purpose. A business reserve is a little different, because it tends to be bigger relative to monthly spending and it sits longer. So it’s worth being deliberate about.

Let’s say a small business keeps a $20,000 reserve. Here’s roughly what a year looks like in three places, using late-September 2026 yields and a hypothetical 5% state income tax:

• Regular business checking at ~0.01%: about $2 a year.
• High-yield savings at ~4.0%: about $800 before tax. The state takes about $40, leaving roughly $760 before federal tax.
• 3-month Treasury bills at ~4.1%: about $820, and Treasury interest is exempt from state and local income tax, so the state takes nothing.

The gap between checking and either of the other two is the whole story. The gap between savings and T-bills is small, around $60 in this example, and it grows with the size of the reserve and your state’s tax rate. In a no-income-tax state it can shrink to almost nothing.

So how do I think about choosing?

• Under about $10,000: a high-yield savings account is fine. Simple wins. Top online banks were paying somewhere around 3.5% to 4.2% APY in late September 2026.
• Larger, and you live in a taxed state: a short ladder of Treasury bills starts to earn its setup time. Buy a 13-week bill every month for three months and you’ll have one maturing roughly every four weeks from then on. A brokerage like Charles Schwab makes it a few clicks, including automatic rollover.
• Either way: keep two or three weeks of expenses in savings for the true same-week emergency, since a T-bill you sell early can come back slightly above or below what you paid.

The Bitcoin question, honestly

This is the part people actually want to argue about, so I’ll try to be fair to both sides.

The case for holding some

Bitcoin’s supply is capped at 21 million coins. New issuance gets cut in half roughly every four years. No central bank can create more of it. If you believe, as a lot of people do, that the dollars in a savings account slowly lose purchasing power over decades, Bitcoin is an attempt at money that can’t be diluted. The Bitcoin Standard by Saifedean Ammous is the book that makes that argument most forcefully, and whether or not you end up agreeing, it’ll make you think harder about what money is. (It pairs well with a post I wrote a while back asking what our current understanding of money even is.)

The case against holding it with business money

• It has fallen more than 70% from its peak more than once. A reserve that can lose three-quarters of its value is not a reserve.
• It produces no income. Every bit of the return depends on someone paying more later.
• Custody is on you. Exchanges have failed; self-custody means a lost seed phrase is gone forever.
• Every sale is a taxable event, and holding it inside an entity adds work for whoever does your books.
• The thesis might simply be wrong, or right on a timeline longer than your business can wait.

Where I land

Bitcoin never goes in the first two rows of that table. Not the checking account, not the reserve. If it goes anywhere, it comes out of true surplus, in an amount I could watch get cut in half, and then in half again, without changing a single decision about the business or my family. I’ve written about the sleep test I use for sizing it, and I’d apply the same test here.

If you do decide to hold some, I think small automatic buys are more honest than trying to pick a good day. River is built around recurring purchases, which takes the timing temptation off the table. For anything you plan to hold for years, it’s worth learning how hardware wallets work before the balance gets meaningful.

A picture of how this plays out

An illustrative example, not a real person: Leah runs two ATMs and a small vending route on the side of a full-time job. For the first year everything lived in one account, and every month she looked at the balance and felt either rich or broke depending on the timing of her last restock. Then a location closed, a machine sat in her garage for five weeks, and a repair landed the same month. The money was technically there. It just wasn’t separated, so she spent her inventory budget on the repair and short-stocked her best machine.

She split it up. One account for the month’s outflows. A savings account for the reserve, then a T-bill ladder once the reserve passed $10,000. Only after both were full did anything go to long-term assets: most of it to the next machine, some to an index fund, and a small weekly Bitcoin buy she’s decided never to check more than once a quarter. Nothing about her income changed. What changed was that a bad month stopped feeling like an emergency.

If this pushed you from curious to serious, the next read is Where to Keep Business Cash: Checking, HYSA, Treasuries or Bitcoin? (2026) — it’s written for people actually doing it.

The monthly habit that makes it stick

Systems beat willpower. When money comes in:

1. Move taxes out first. It was never yours.
2. Refill checking to one month of outflows, no more.
3. Fill the reserve to target before anything else gets a dollar.
4. Only then decide what the surplus should become: another income-producing asset, a long-term investment, or both.

For a lot of small operators, the best use of surplus is the next location, not the next investment. If that’s you and you run a route, VendBuddy (full disclosure: it’s my company) can pull apartment buildings, offices and gyms in your ZIP with the manager’s contact, and it sells credits in single packs, so you can try it without a monthly plan.

Here’s a journal prompt to close on: if your business account balance dropped by half tomorrow, which bills would still get paid on time? If you can’t answer instantly, that’s the first account to open.