Finance & FP&A

How to model financial scenarios and sensitivities as Chief of Staff and Founder's Office

Finance & FP&AFor Chief of Staff and Founder's Office3 apps11 steps~22 min to set up

You're the one who gets asked 'what happens to runway if we add 10 engineers next quarter?' at 9pm before a board meeting. Your current answer involves opening three spreadsheet tabs, pasting in Stripe MRR from last month's investor update, eyeballing Plaid transaction exports your bookkeeper sent two weeks ago, and building a scenario model that's already stale before you finish it. The base case is always a guess. The hiring scenario is a guess on top of a guess. QuickBooks has the actuals, HubSpot has the pipeline, but nothing talks to anything — so you're the one doing the connecting, manually, every time.

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Finance & FP&AFor Chief of Staff and Founder's Office3 apps11 steps~22 min to set up

Outcome

What you'll set up

A live baseline model that pulls actual revenue from Stripe and actual burn from Plaid on a schedule — so your starting numbers are never a month old when someone asks a question

Side-by-side scenario comparisons (hiring plan A vs. B, pricing change, delayed fundraise) built on real actuals, not assumptions pasted from last quarter's deck

A shareable financial view you can drop into a board prep doc or Slack to your CEO without reformatting anything

The Starch recipe

Apps, data, and prompts

The combination of Starch apps, the data sources they pull from, and the prompts you use to drive them.

Apps used

Scenario Analysis Runway Analysis Budgeting

Data sources & config

Starch syncs your Stripe data (charges, invoices, subscriptions) and your Plaid data (bank transactions, categorized spending, balances) on a schedule — so every scenario, runway projection, and budget comparison is drawing from live actuals, not a spreadsheet you uploaded last Tuesday. QuickBooks is also connected via scheduled sync for entity-level data (bills, invoices, vendor payments) if you want actuals to flow from your books rather than your bank feed.

Prompts to copy

Build me a scenario model with three cases: base (current hiring pace), accelerated (add 8 engineers and 2 AEs in Q3), and conservative (freeze headcount, cut software spend 20%). Pull our actual revenue from Stripe and burn from Plaid as the baseline. Show runway, monthly net burn, and break-even month for each scenario side by side.

Show me our current runway and net burn trend for the last 6 months, broken down by expense category. Flag any category that's running more than 15% over its historical monthly average.

Set up a quarterly budget for Q3 using our actual Q1 and Q2 Plaid spending as the baseline. Let me override headcount costs manually and show variance against actuals as the quarter progresses.

Run these in Starch → or paste them into your favorite agent

Walkthrough

Step-by-step

1 Connect Stripe and Plaid in Starch — both sync on a schedule, so your revenue and bank transaction data refreshes automatically without any manual exports.

2 Open the Runway Analysis app from the App Store. Your baseline net burn and cash runway will populate from live Stripe and Plaid data within minutes of connecting.

3 Review the 6-month burn trend and expense category breakdown. Identify which categories are driving the most variance — this becomes the foundation for your scenario assumptions.

4 Open the Scenario Analysis app. Your Stripe MRR and Plaid burn automatically populate the base case — you only touch the assumptions you actually want to test.

5 Type your first scenario prompt: describe the headcount change, pricing shift, or revenue assumption you want to model. Starch builds the scenario from that description without requiring you to wire formulas.

6 Add a second and third scenario in the same session — for example, an accelerated hiring plan and a fundraising delay — and compare runway, burn rate, and break-even across all three side by side.

7 If QuickBooks is connected (scheduled sync), cross-check your Plaid-based burn against QuickBooks actuals to make sure categorization is consistent before sharing numbers with the board.

8 Open the Budgeting app and set Q3 budget targets by category. Starch auto-suggests allocations based on your historical Plaid spending, which you can override for headcount or one-time items.

9 As the quarter runs, the budget view compares actuals from Plaid against your targets in real time — pace indicators flag categories that are running hot before they become a problem.

10 When a board meeting or investor update is coming, describe the financial summary view you need: 'Show me a one-page summary with runway under each scenario, Q2 actuals vs. budget, and the top 3 expense categories by variance.' Starch builds that view from the same connected data.

11 Share the view directly with your CEO via a Starch link or export it into your board deck — no reformatting, no copy-pasting from three different tabs.

See this running on Starch

Connect your tools, describe what you want, and the agent builds it. Closed beta is free.

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Worked example

Q2 2026 Board Prep — Headcount Scenario, June 2026

Sample numbers from a real run

Current MRR (Stripe actuals)	487,000
Monthly net burn — base case (Plaid actuals)	312,000
Runway — base case	14
Incremental monthly burn — accelerated hiring (+10 eng, +2 AE)	187,000
Runway — accelerated case	8
Runway — conservative (headcount freeze, -20% software)	21

It's June 12th, ten days before the Q2 board meeting. The CEO wants to know whether to approve the engineering hiring plan the CTO pitched. You open Scenario Analysis in Starch. The base case loads automatically: $487K MRR from Stripe, $312K monthly net burn from Plaid, 14 months of runway. You type: 'Add a scenario where we hire 10 engineers and 2 AEs starting August 1. Assume $18K average fully loaded monthly cost per head.' Starch builds the scenario: net burn jumps to $499K/month, runway compresses to 8 months — not enough cushion before the next expected raise. You add a third scenario: freeze headcount, cut software and tools spend by 20%. Runway extends to 21 months. Now the board conversation has a concrete shape: accelerated hiring requires a raise by Q1 2027, conservative buys you through mid-2028. You drop the three-scenario comparison into the board deck appendix and Slack the CEO a one-paragraph summary before dinner. Total time from question to shareable answer: 25 minutes, not 3 hours.

Measurement

How you'll know it's working

Months of runway under each named scenario (base, accelerated, conservative)

Monthly net burn variance vs. prior 3-month average, by expense category

Time from CFO/CEO question to shareable scenario model (target: under 30 minutes)

Budget variance by category as a percentage of quarterly target, updated in real time

Break-even month under each scenario, updated when actuals shift

Comparison

What this replaces

The other ways teams handle this today, and how the Starch version compares.

Excel or Google Sheets with manual exports

You control every formula, but every board meeting starts with 45 minutes of copy-pasting from Stripe, Plaid, and QuickBooks — and the model is stale the moment you close it.

Mosaic or Runway (dedicated FP&A tools)

Purpose-built for financial modeling with a proper finance team, but they're priced and scoped for a CFO workflow — not a chief of staff who also needs to wire the same data into a board-prep tracker and an OKR dashboard next week.

QuickBooks reports directly

Actuals are accurate, but QuickBooks doesn't build scenarios, doesn't talk to Stripe, and produces reports designed for accountants rather than for answering 'what happens to runway if we hire 10 people.'

Your BI tool (Metabase, Looker, whatever the last analyst set up)

Powerful for historical reporting if someone already built the right dashboards, but changing the model or adding a new scenario requires a data analyst or SQL — neither of which you have on call at 9pm.

On Starch RECOMMENDED

One platform — scenario planning, runway analysis, quarterly budgeting all running on connected data. Setup in plain English; numbers stay current via scheduled syncs and live agent queries.

Try it on Starch →

FAQ

Frequently asked questions

Are the scenario numbers actually based on our current financials, or do I have to enter a baseline manually?

The baseline comes from your connected data. Starch syncs your Stripe revenue and Plaid transactions on a schedule, so when you open Scenario Analysis, the base case reflects your actual current MRR and burn — not a number you typed in last month. You only input the assumptions you're changing (headcount additions, pricing shifts, growth rate adjustments).

Can I use QuickBooks actuals instead of Plaid for the burn side?

Yes. Starch syncs QuickBooks entity-level data (bills, invoices, vendor payments, journal entries) on a schedule. One honest caveat: QuickBooks report views like P&L and Transaction List are temporarily unavailable due to an upstream issue, but entity-level data syncs normally. For most scenario modeling purposes — total burn, expense by vendor, headcount costs — entity-level data is sufficient.

What if I want to model a scenario that involves assumptions my bookkeeper hasn't entered yet, like a planned raise or a new contract?

Scenario Analysis lets you override any assumption on top of the live baseline. So if you know you're signing a $40K/month infrastructure contract in Q3 that's not in the books yet, you tell Starch: 'Add $40K to monthly burn starting September' — and the model incorporates it without touching QuickBooks or Plaid.

Is this SOC 2 certified? My board will ask about data security before we connect Stripe and Plaid.

Starch is not SOC 2 Type II certified today. That's worth naming honestly. If your board or legal team requires SOC 2 certification before connecting financial data, that's a blocker right now — not something to work around. It's on the roadmap.

Can I share the scenario output with my CEO or board without them needing a Starch login?

You can describe the exact view you need — 'a one-page summary showing runway under three scenarios, Q2 actuals vs. budget, and the top expense variances' — and Starch builds that view from your connected data. Exporting it into a board deck or sharing a snapshot is straightforward. For collaborative real-time access, your counterparts would need Starch access.

How is this different from just asking an AI chatbot to build a scenario model in a spreadsheet?

A chatbot builds a template with placeholder numbers you fill in. Starch connects to your actual Stripe revenue and Plaid transactions and uses those as the live baseline — so the model reflects what's actually happening in your business today, not what you estimated when you set up the template. When your MRR changes next month, the model updates. You don't rebuild it.