Make the decision. Then see what it costs.
FireFi lets you model any financial scenario against your real data. Add a hire, delay a contract, lose a customer. See the cash impact across the next 13 weeks before you commit.
Not a spreadsheet. Not a guess. A scenario grounded in your actual numbers.
Most founders make significant financial decisions without a clear view of the cash impact. Not because they do not care, but because producing a model takes time. You need to open a spreadsheet, find the right baseline, make the assumptions, build the formulas, and hope nothing is out of date. By the time you have a number, the context has moved on.
So the modelling does not happen. The decision gets made on instinct. Sometimes that is fine. Sometimes it is how a business gets into cash trouble it did not see coming.
FireFi changes what it costs to model a decision. Because your forecast is already live and connected to real data, a what-if scenario takes seconds. You add the change, you see the impact, and you make a more informed call.
What kinds of scenarios can you run?
Anything with a cash consequence. Some examples:
What if we hire two more people?
Add the salary cost, employer taxes, and start date. FireFi shows how the hire lands on your cash position week by week across the forecast horizon, and what your runway looks like with that commitment in place.
What if our largest customer pays 60 days late?
Model the payment delay against your existing cash commitments. See which weeks get tight and whether the shortfall is manageable or something you need to act on now.
What if we raise prices by 15%?
Apply a revenue uplift to your projected inflows and see the compounding effect on cash over the coming quarter. Adjust the assumption and see the model update.
What if we take on a new fixed cost?
Add a recurring cost and see how it affects your burn rate and projected runway. Useful for software contracts, office leases, agency retainers, anything with a monthly commitment.
What if we lose a customer?
Remove a revenue line and see how long your existing cash position holds without it. The kind of scenario most founders run mentally but rarely model explicitly.
Built on your actual numbers, not a blank spreadsheet
The problem with most scenario models is the baseline. You build assumptions from scratch, which means the model is only as good as the assumptions. FireFi's what-if scenarios start from your live forecast, which is already built from your real accounting and banking data. Every scenario runs on top of what is actually happening in your business, not a set of inputs you typed in three months ago.
Every figure in the scenario links back to source data
When you run a scenario in FireFi, the baseline numbers underneath it are the same sourced, clickable figures as your main forecast. You can see exactly what the current position is built from before you model the change. No black box. No numbers you cannot check.
Scenarios run directly on your 13-week forecast
What-if modelling in FireFi is not a separate tool. It runs directly on top of your live 13-week cash flow forecast. That means every scenario is immediately comparable to your baseline, and the impact of any change is visible in context.
Model the decision before you make it.
FireFi is in early access. Book a 20-minute call with the founding team to talk through your finance setup and hear what we are building. Or join the waitlist and we will be in touch when it is your turn.
Common questions
How is this different from building a model in Excel?
The baseline. In Excel you start from scratch or from an export that is already out of date. In FireFi your baseline is your live financial data, updated continuously. The scenario runs on top of what is actually happening, not what you typed into a cell.
Can I save a scenario and come back to it?
Scenario saving and comparison will be part of the product. If this is important to your workflow, raise it on your discovery call.
How many scenarios can I run at once?
You can run and compare multiple scenarios. The specifics of the comparison interface are being refined with early access customers. If you have a view on what that should look like, the founding team wants to hear it.
Does it work for revenue scenarios as well as cost scenarios?
Yes. You can model changes to inflows (new customers, pricing changes, contract wins or losses) and outflows (new costs, headcount changes, capex) in the same interface.