Business Decision Assistant
Break a business decision into its financial impact, assumptions, risks, evidence, and unanswered questions. The goal is not to make the decision for you, but to make the reasoning behind it easier to examine.
Work through a decision
Start by describing the decision, then examine what it will cost, what you expect it to provide, what must be true for it to work, and what you still do not know.
Start with the decision you are actually considering. Then describe the financial assumptions and the reasoning behind them. You do not need perfect information—reasonable estimates are enough to begin.
State what you are considering doing and what you are trying to decide.
Enter the upfront cost, expected monthly benefit, and cash available to understand the basic financial position.
List the assumptions that need to hold for the decision to produce the expected result.
Write down information that could materially change your decision but that you have not confirmed yet.
What goes here?
Example: "Should I purchase a machine that could increase production capacity?"
Try to describe an actual choice rather than simply describing a problem.
What goes here?
This could include the purchase price, installation, setup, initial fees, or other immediate costs.
Example: If the total upfront investment is $5,000, enter 5000.
What goes here?
This might come from additional sales, reduced costs, increased productivity, or another measurable benefit.
Example: If you expect the decision to generate or save around $1,000 per month, enter 1000.
This is an estimate, not guaranteed income.
What goes here?
Example: If you have $8,000 available and the decision requires $5,000 upfront, enter 8000.
Do not automatically treat all business cash as available. Consider money needed for normal operating expenses as well.
What goes here?
Example: If the investment is expected to start producing benefits after three months, enter 3.
Enter 0 if the benefit is expected to begin immediately.
What goes here?
Ask: "What am I assuming will happen?"
Examples:
- Customers will buy at the expected price.
- The machine will operate reliably.
- The expected number of customers will be reached.
- Suppliers will continue providing materials at approximately the expected cost.
What goes here?
Think about:
- Lower-than-expected demand
- Higher costs
- Delays
- Equipment failure
- Changes in the market
What goes here?
Examples include:
- Customer interviews
- Actual sales data
- Supplier quotations
- Market research
- Small experiments or tests
What goes here?
A useful test is: "If I discovered the answer to this question, could it change my decision?"
If yes, it belongs here.
Why break a business decision into parts?
Decisions often feel difficult because several different questions are mixed together.
Separating the financial impact from assumptions, risks, evidence, and unknowns makes it easier to see what you actually know and what you are still assuming.
The purpose of this tool is therefore not to produce a "yes" or "no." It is to make the decision easier to examine.
How the financial calculation works
The tool uses a simple payback calculation to show how long it would take for the expected monthly benefit to equal the upfront cost.
Upfront cost ÷ Expected monthly benefit
It also subtracts the upfront cost from the cash available to show the amount remaining after the purchase.
Current cash available − Upfront cost
These are simplified calculations and do not include financing costs, taxes, depreciation, changing benefits, or other factors unless they are reflected in the numbers you enter.
Why ask "What must be true?"
Every business decision contains assumptions. A decision may look attractive only if certain conditions actually occur.
For example, buying equipment might appear worthwhile if you assume customers will provide enough demand to use the additional capacity.
Evidence versus assumptions
An assumption is something you believe needs to be true. Evidence is information that gives you reason to believe that assumption may actually hold.
For example:
- Assumption: Customers will pay $50.
- Evidence: Five potential customers said they would consider buying at that price.
The distinction helps prevent expectations from being mistaken for facts.
What this tool does not decide
A short payback period does not automatically mean a decision is good. A long payback period does not automatically mean it is bad.
The decision may also depend on strategic value, alternatives, risk tolerance, opportunity cost, non-financial benefits, and information that has not yet been collected.
Use the result as a structured starting point for thinking—not as an automatic recommendation.
This tool provides estimates based on the information entered. It is intended to support thinking and planning, not replace professional accounting, tax, legal, financial, or other advice.