Start with questions, then fill in numbers

Harvard Business School professor William Sahlman's planning framework focuses on the people, the opportunity, the context, and risk and reward. Those questions expose a page full of revenue forecasts that never explains who will buy or how the work gets done. (Harvard Business School: William Sahlman on a useful business plan)

SBA describes lean plans as a short format for the important points; lenders or investors may want a detailed traditional plan. Use the format for the decision you're making, and ask a lender what it needs before preparing an application. (SBA: market research, business plans and startup costs)

A working example, with room to be wrong

Here is a hypothetical move-out cleaning offer. The numbers are invented to show the questions, not market prices or a startup budget to copy. Notice that the unknowns stay on the page.

DecisionWorking answerStill to check
CustomerLocal landlords with small apartment buildingsWho chooses the cleaner, and how often?
OfferA defined one-bedroom turnover clean, with completion photosWhich tasks and conditions change the scope?
PriceTest a $240 quote for the agreed scopeWill buyers accept it, and does it cover all the time?
DeliveryOne Saturday slot within a short service areaKey access, travel, supplies and permissions
First customersContact landlords from the research conversationsWho wants a quote now?
Startup spendingList equipment, setup costs and any required feesWhich costs are essential before the first job?
Monthly spendingList recurring bills and expected job costsWhat stays payable during a quiet month?
BoundariesNo carpet extraction in this offerDo enough customers want the smaller scope?
Next decisionReview the first test before adding bookingsWhat would make us change the price or stop?
Scroll the table horizontally on a smaller screen.

Make the costs show their work

Use actual quotes where you can, and label estimates where you can't. Separate costs paid once, bills that repeat and costs that rise with each job. Write down when the money leaves as well as how much it is. A profitable job can still require cash before the customer pays.

Run a slower-start version of the numbers. What if the first month has two jobs instead of six? What if a piece of equipment needs replacing? Choose the amount of cash to hold from the situation you could realistically face, rather than adopting a universal three-month rule.

Use the page when somebody sells you a shortcut

A franchise offer or business-in-a-box pitch deserves its own review. The FTC's Franchise Rule generally requires the Franchise Disclosure Document at least 14 days before signing or paying. For arrangements covered by the separate Business Opportunity Rule, the disclosure period is at least seven days; earnings claims bring additional requirements. (FTC: a consumer’s guide to buying a franchise; FTC: what the Business Opportunity Rule covers)

Read the relevant FTC guide, speak to current and former operators, and get independent legal and financial advice before committing. Ask how fees, required purchases and restrictions would change your plan. An income claim on a sales call is something to verify, not a number to paste into your forecast. (FTC: a consumer’s guide to buying a franchise)

Take it to a second reader

Ask someone to find the assumption they'd be least willing to bet their own money on. You don't need applause; you need the missing cost, the awkward customer question or the timetable that only works if nothing ever goes wrong.

SBA's local directory lists counseling resources such as SCORE and SBDCs. Bring the page and your evidence. Then update it with a date and the next action, so the plan stays connected to the work. (SBA: local business counseling)

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Sources

Questions & answers

Is a one-page business plan enough?

It can be enough for your own early decisions. A lender, investor, partner or more complex business may need much more detail. Ask what the plan must support before deciding its length.

What belongs in a simple business plan?

The customer, offer, price, delivery method, way to find buyers, costs and next decision. Keep the unknowns visible. The page should help you choose what to do next.

How do I estimate startup costs?

Get quotes for the things you must pay for before opening, then list recurring bills and job-by-job costs. Add the timing of payments and test a slow start. Your trade, location and existing equipment make the total specific to you.

How often should I update the plan?

Update it when you learn something that changes a decision: a customer response, a supplier quote, a permit requirement or the true time a job takes. Put a date on each version.

Who is this for?

Are you a builder, a baker, a candlestick maker? Got a pulse and a small-business dream? Pull up a chair.

A few businesses that can use BizzyBot:

  • Shop owners
  • Consultants and designers
  • Builders and tradespeople
  • Repair shops and salons
  • Cleaning and landscaping businesses

Starting out or already juggling customers, jobs and a calendar that won't sit still? Keep the details together so your head doesn't have to hold every last one.

Business examples from 2025 U.S. Census application data

What's the difference between owners, teammates and light users?

Owner: $12/month. The person who runs the business workspace, manages billing and decides who gets access.

Teammates: $6 per person, per month. They create or change projects, tasks, schedules and events, and use the calendars. Their permissions decide what they can change.

Light users: $0 per person, per month. They can view schedules and the jobs they're assigned to in the owner's workspace. People who edit that work need a teammate seat.