Finance & FP&A

How to track gross margin by channel and sku as Small Marketing Teams

Finance & FP&AFor Small Marketing Teams3 apps12 steps~24 min to set up

You're a three-person marketing team trying to figure out whether your LinkedIn Ads campaign or your Content organic play actually contributed margin — not just pipeline, margin. Every Monday you export a Stripe revenue CSV, manually join it against HubSpot deal stages in a Google Sheet, eyeball the Meta Ads spend column you copied from Business Manager, and still can't tell whether the Blog channel is profitable after you factor in the freelancer invoice sitting in QuickBooks. You don't have a BI tool. You don't have a finance analyst. You have a spreadsheet that's already wrong by Tuesday and a CEO asking 'which channel should we double down on this quarter?'

Build this on Starch → See the apps used

Finance & FP&AFor Small Marketing Teams3 apps12 steps~24 min to set up

Outcome

What you'll set up

A live gross margin view broken down by marketing channel (Paid Social, Paid Search, Organic, Email, Events) with revenue pulled from Stripe and costs pulled from Plaid bank transactions — updated daily, no manual exports

A SKU-level profitability layer that maps HubSpot deal line items against ad spend from Google Ads and Meta Ads so you can see which product tier each channel actually sells, not just which one generates clicks

A weekly Slack-ready summary that writes itself: channel spend, channel-attributed revenue, and gross margin percentage per channel, ready to paste into the CEO update without you rebuilding it from scratch

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

Runway Analysis Scenario Analysis Transaction Insights

Data sources & config

Starch syncs your Stripe data on a schedule (charges, customers, subscriptions) and syncs your Plaid bank transactions on a schedule for cost data. HubSpot is connected from Starch's integration catalog — the agent queries it live to pull deal records, lead source fields, and line items when the dashboard runs. Google Ads and Meta Ads are connected from Starch's integration catalog and queried live for spend data by campaign and date range.

Prompts to copy

Build me a gross margin dashboard that pulls revenue by product SKU from Stripe and matches each charge to a HubSpot deal. Group the deals by the 'Lead Source' field in HubSpot so I can see revenue by channel. Pull our ad spend from Google Ads and Meta Ads and subtract it from channel revenue to show gross margin per channel. Refresh daily.

Show me a spend breakdown from our Plaid-connected bank account. Filter to only vendors tagged as marketing spend — ad platforms, freelancers, design tools, event costs. Group by month and vendor so I can see our total cost of marketing by category.

Build me a scenario that shows what happens to our Q3 gross margin if we shift 20% of Paid Social budget into Content. Assume Content's CAC stays flat and Paid Social revenue drops proportionally. Show me break-even and runway impact.

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

Walkthrough

Step-by-step

1 Connect Stripe in Starch — Starch syncs your charges, invoices, and subscription data on a schedule so revenue is always current without any CSV exports from you.

2 Connect your business bank account via Plaid — Starch syncs transactions daily so your actual marketing costs (ad invoices, freelancer payments, SaaS tools) show up without waiting for QuickBooks to close.

3 Connect HubSpot from Starch's integration catalog — the agent queries deals, lead source fields, and deal line items live each time your dashboard refreshes, so you're always looking at current pipeline data.

4 Connect Google Ads and Meta Ads from Starch's integration catalog — campaign-level spend comes in live so you can match it against the revenue each channel generated in the same period.

5 Open the Spend Insights app and describe your marketing cost categories to Starch — tell it which Plaid vendor names are ad spend, which are freelancers, and which are tools, so it can group them correctly without you tagging every line manually.

6 Describe your gross margin dashboard to Starch in plain language: which HubSpot lead source values map to which channels, which Stripe product SKUs are which, and how you want margin calculated (revenue minus direct ad spend, or revenue minus all marketing costs including freelancers).

7 Starch builds the channel × SKU margin view — rows are channels (Paid Social, Paid Search, Organic Content, Email, Events), columns are your SKUs (Professional, Business, Enterprise, or whatever your Stripe products are named), cells show revenue, cost, and gross margin percentage.

8 Add a 'this week vs last week' delta column so you can immediately see if Paid Search margin degraded after a CPM spike without manually comparing two exports.

9 Set up a Monday morning automation: tell Starch 'every Monday at 8am, run the gross margin dashboard, write a three-sentence summary of which channel had the highest margin this week and which had the biggest week-over-week swing, and post it to #marketing-weekly in Slack.'

10 Use the Scenario Analysis app to model channel reallocation — start with your actual Stripe and Plaid baseline, then tell Starch 'what if we reduce Meta Ads spend by $8,000/month and put it into a content program with a $5,000/month freelancer budget?' and see the projected margin impact over six months.

11 When the CEO asks 'which channel should we double down on?' pull up the SKU-level view and show the margin percentage per channel per product — not just volume, not just ROAS, actual margin. That's the conversation that used to take you half a day to prepare.

12 Fork the dashboard for the quarterly board update — tell Starch 'take the gross margin dashboard and reformat it as a quarterly summary with a chart showing margin trend by channel over the last three quarters' and use that as your starting point instead of rebuilding a slide from scratch.

See this running on Starch

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

Try it on Starch →

Worked example

Q1 2026 channel margin review — 120-person B2B SaaS

Sample numbers from a real run

Paid Social (Meta Ads) — Revenue Attributed	41,200
Paid Social — Ad Spend (Plaid)	18,400
Paid Social Gross Margin	22,800
Paid Search (Google Ads) — Revenue Attributed	67,500
Paid Search — Ad Spend (Plaid)	22,100
Paid Search Gross Margin	45,400
Organic Content — Revenue Attributed	38,900
Organic Content — Freelancer + Tool Costs (Plaid)	6,200
Organic Content Gross Margin	32,700
Email / Lifecycle — Revenue Attributed	29,100
Email — ESP + Ops Costs (Plaid)	1,800
Email / Lifecycle Gross Margin	27,300

Going into Q1 planning, your team assumed Paid Social was your second-best channel because it drove 41 HubSpot deals last quarter — more than Organic Content. But when Starch joined the Stripe charges against HubSpot lead sources and subtracted the actual Meta Ads invoices from your Plaid feed, a different picture appeared. Paid Social gross margin was 55% ($22,800 on $41,200 revenue). Organic Content was 84% ($32,700 on $38,900 revenue) because your freelancer and tool costs were only $6,200 total. Email was 94% margin. Paid Search sat in the middle at 67% — high volume, decent margin, but CAC climbing. The 'double down on Paid Social because the deal count is high' instinct would have been the wrong call. You ran a Scenario Analysis that modeled shifting $6,000/month from Meta Ads into a freelancer content budget — Starch showed Q2 gross margin improving by approximately $4,100/month at current conversion rates, with runway unchanged because the cost swap was roughly neutral. You brought that model to the CEO meeting instead of a gut feeling, and the content investment got approved in the same conversation.

Measurement

How you'll know it's working

Gross margin percentage by channel (Paid Social, Paid Search, Organic Content, Email, Events) — weekly

Cost per acquired dollar of revenue by channel — how much ad or content spend does it take to generate $1 of Stripe revenue, tracked by HubSpot lead source

SKU mix by channel — which channels sell Professional vs Business vs Enterprise, because your margins differ by product tier

Marketing cost as a percentage of revenue — total Plaid-sourced marketing spend divided by total Stripe revenue that month

Week-over-week margin delta by channel — the number that tells you whether a CPM spike or a freelancer invoice actually hurt this week

Comparison

What this replaces

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

Google Sheets + manual CSV exports

Free and familiar, but you're rebuilding it from scratch every Monday — by Wednesday it's stale and you've spent three hours that could have gone into campaign work.

Looker Studio (free tier)

Decent for connecting GA4 and Google Ads, but joining Stripe revenue against HubSpot lead sources requires data blending that breaks constantly and still doesn't include your Plaid cost data.

HubSpot reporting + Stripe integration

HubSpot's revenue reporting is deal-centric, not margin-centric — it won't subtract your ad spend or freelancer costs, so you're looking at pipeline volume, not profitability.

A lightweight BI tool (Metabase, Tableau Cloud)

These tools can do what you need, but they require a data engineer or at minimum someone who can write SQL and maintain a data pipeline — a headcount you don't have and can't justify for a three-person team.

On Starch RECOMMENDED

One platform — runway analysis, scenario planning, transaction insights 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

We use Customer.io for lifecycle email and it's not in Stripe or HubSpot — can Starch pull email channel costs from it?

Yes. Customer.io is reachable from Starch's integration catalog; the agent queries it live when your dashboard runs. For spend, your Customer.io subscription charge will show up in your Plaid bank feed anyway, so Starch can tag it as an email channel cost from there even if the ESP itself doesn't have a 'cost' field to query.

Our Meta Ads and Google Ads attribution doesn't match HubSpot — the numbers are always different. How does Starch handle this?

Starch surfaces both numbers and lets you decide how to reconcile them. You can tell Starch 'use HubSpot lead source as the source of truth for channel attribution and use Meta Ads spend as the cost denominator' — the dashboard shows you the attribution model you chose, not a black-box reconciliation. It doesn't magically fix the attribution problem, but it makes the discrepancy visible and consistent.

Is Starch SOC 2 certified? We'd need that for the security review before connecting Stripe and Plaid.

Not yet — Starch is not SOC 2 Type II certified today. If your company's security policy requires SOC 2 Type II for any tool that touches financial data, that's a real constraint to know upfront. It's on the roadmap.

We don't have Stripe — we invoice through QuickBooks and collect via ACH. Can we still track revenue by channel?

Yes. Starch syncs QuickBooks data on a schedule including invoices, payments, and customers. You'd match QuickBooks invoice data against HubSpot deals by company name or deal ID instead of Stripe charge IDs. The margin math works the same way; the revenue source is QuickBooks instead of Stripe. Note: QuickBooks report views like P&L are temporarily unavailable, but entity-level data including invoices and payments sync normally.

We tag our freelancer invoices inconsistently in our bank — sometimes it's a Venmo transfer, sometimes a wire with their name. How does Starch know those are marketing costs?

You tell it. When you first set up the dashboard, describe to Starch which vendor names or transaction descriptions in your Plaid feed are marketing costs — 'anything from Jane Doe Consulting or JaneDoe123 on Venmo is a content freelancer, tag it as Organic Content cost.' Starch applies that rule going forward. It's a one-time setup conversation, not ongoing manual tagging.

Can we track event marketing costs separately? We run two or three field events per quarter and the costs are all mixed in with regular expenses.

Yes — describe the event cost pattern to Starch ('any transaction from EventBrite, the Hyatt, or catering vendors between March 10 and March 12 belongs to the Q1 Summit event channel') and it will group those Plaid transactions as an Events channel in your margin view. You can also tell Starch to prompt you to confirm event date ranges each quarter so the grouping stays accurate.