Most small businesses run out of cash slowly and then all at once. Cannabis businesses get there faster, for reasons that have nothing to do with how well they sell. Much of their revenue arrives as paper money that has to be counted, guarded and driven somewhere. Their federal tax bill, under 280E, can run ahead of their actual profit. And their wholesale customers often pay late, because those customers are short on cash for the same reasons.
A 13-week cash flow forecast is the tool for this. It is not a budget and not a profit forecast. It is a week-by-week answer to one question: will there be enough cash in the bank, and in the vault, to pay what is due? This piece covers how to build one for a cannabis operator, and where AI can take some of the weekly grind off your hands. It is educational, not financial or tax advice.
Why the 13-week view, and why weekly
Monthly forecasts hide the weeks that kill you. Payroll lands every other Friday, rent on the first, a state tax payment on its due date, and a big wholesale check whenever the customer gets around to it. A month can look fine in total and still have one week where the account goes below zero. Thirteen weeks is one quarter: long enough to see the next estimated tax payment coming, short enough to forecast line by line instead of guessing at percentages.
What is different about cannabis cash
Cash is a physical object
Many cannabis businesses still take a lot of cash, and cash in a vault is not cash in the bank. It can pay employees and some vendors, but not most tax authorities, landlords on autopay or software subscriptions. Track the two separately in your forecast: vault cash and bank cash, with the deposits that move money from one to the other as their own line. If deposits depend on an armored car that comes twice a week, that schedule belongs in the forecast too.
Banking has rules of its own
Banks and credit unions that serve cannabis businesses do so under 2014 FinCEN guidance, which sets out the reports they must file on marijuana-related customers. The practical results for the forecast: account fees are often higher than at a normal bank, deposits may face extra review, and an account can be closed with little notice. A forecast that assumes one bank account will always be there has a single point of failure, and you should know what happens to your cash plan if it goes away.
Cash reporting has deadlines
Any trade or business that receives more than $10,000 in cash in one transaction, or in related transactions, has to file IRS Form 8300 within 15 days, according to the IRS. The IRS also says it accepts cash tax payments at some Taxpayer Assistance Centers, by appointment. Neither is a cash-flow item by itself, but both create calendar dates your team has to hit, and a cash tax payment means planning a trip with a lot of money.
The tax bill is bigger than the profit
For a business subject to 280E, ordinary operating expenses are not deductible, so taxable income can exceed book profit, sometimes by a lot. That makes federal estimated tax payments larger than the income statement suggests, and they come due quarterly whether or not the wholesale checks have arrived. The forecast needs a tax reserve line that is built from your 280E allocation, not from your net income.
Since April 2026, state-licensed medical marijuana has been in Schedule III, which may take some medical operators out of 280E going forward, while adult-use stays in Schedule I. Until your CPA tells you otherwise, forecast tax as if 280E still applies. If relief comes, it is upside. See what Schedule III changes on the books.
Building the forecast
Use the direct method: actual cash in, actual cash out, by week. Here are the lines that matter for a typical cannabis operator.
| Receipts | How to forecast it |
|---|---|
| Retail cash sales | From POS history by day of week, adjusted for known events; lands in the vault first |
| Card and cashless sales | From POS history; note the settlement lag from your processor |
| Wholesale collections | From your AR aging, by when each customer actually pays, not by the due date |
| Other | Loans, owner contributions, refunds |
| Disbursements | How to forecast it |
|---|---|
| Payroll and payroll taxes | By pay date, from the payroll register |
| Rent and occupancy | By due date |
| Inputs and vendors | From open bills and purchase orders; cultivation inputs follow the grow cycle |
| State cannabis and sales taxes | By filing due date, from taxable sales |
| Federal estimated tax | Quarterly, from your 280E-adjusted taxable income |
| Cash logistics | Armored car, cash-handling fees, bank fees |
| Debt service and capex | By schedule |
Then set a minimum cash balance, the number you never want to go below, and flag every week that crosses it. A flag eight weeks out is a choice. A flag next week is an emergency.
The weekly routine
- Enter last week's actuals from the bank, the vault count and the POS.
- Compare actual to forecast, line by line. Write one sentence on any big miss.
- Roll forward: drop the week that just ended, add a new week 13, reset opening cash to the real balance.
- Update collections from the latest AR aging. Call the customers whose checks the forecast is counting on.
- Look at the flags. Decide what to pull forward, push back, or finance.
Done every week, this takes under an hour. Done once a quarter, it is a fire drill.
Where AI helps
- Reconciling cash. Matching POS cash reports to vault counts and bank deposits, and flagging the days that do not match, is tedious for people and quick for software.
- Loading actuals. Pulling bank transactions, coding them to forecast lines and filling the actuals tab.
- Forecasting retail receipts. Projecting sales by day of week from POS history is pattern work that models handle well.
- Chasing collections. Drafting reminders to wholesale customers from the AR aging. See AI for AR collections.
Where it does not
It cannot count the vault. It cannot decide the size of your tax reserve, which is a judgment you make with your CPA. It cannot tell you which vendor to pay late, which is a relationship decision. And it will happily forecast a wholesale check that a person on your team knows is not coming. The forecast is only as honest as the people reviewing it.
Tools for the work
The 13-Week Cash Flow Forecast ($49) is a working Excel file built on the direct method: weekly receipts and disbursements, opening and closing cash, a minimum-cash alert, an actuals tab with the same layout, and automatic forecast-versus-actual variance. Rename the lines to match the tables above. For the tax side, the 280E Cost Allocation Worksheet ($79) gives you the non-deductible total to build the reserve from.
If you want the reconciliation and the weekly actuals load automated, Agor AI builds back-office automations for small finance teams. Start with the $250 AI Automation Audit, credited toward a build.
This is part of a weekly series on AI for finance and back-office work. Get it by email.
This article is educational and is not financial, tax or legal advice. Cash handling, banking and tax rules vary by state and by your licenses; talk to your CPA and your bank before changing how you manage cash.
Sources
- FinCEN: BSA Expectations Regarding Marijuana-Related Businesses, FIN-2014-G001 (February 14, 2014)
- IRS: Cannabis industry, including Form 8300 and cash payments (last reviewed February 6, 2026)
- IRS: Form 8300 reference guide
- 26 U.S. Code 280E (Cornell LII)
- Saul Ewing: DEA Reschedules FDA-Approved Marijuana Products and State-Licensed Medical Marijuana to Schedule III (April 23, 2026)