Revenue leak detection
Find the money leaking between Stripe and HubSpot.
Cross-source joins that detect won-but-unpaid deals, silent churn, failed payment aging, and MRR drift — live from the APIs, not a stale warehouse. Clari and Gartner estimate 3–8% of B2B revenue leaks between systems. This finds where yours goes.
The problem
Your CRM and your billing system disagree about reality.
Sales marks a deal Closed Won. Finance waits for the invoice. Sometimes the invoice never gets created. Sometimes it gets created but fails silently. Sometimes the customer pays but at a different amount than the deal value. Nobody notices until quarterly reconciliation — and by then, the rep has moved on, the champion has left, and the money is gone. Gong watches calls. Baremetrics charts MRR. HubSpot reports pipeline. None of them answer: “which specific deals generated no actual payment?”
Won-but-unpaid deals
HubSpot says "Closed Won" but Stripe has no matching subscription or invoice. The deal was celebrated in the CRM, but no money arrived. This happens more than most teams realize — especially with annual contracts where billing setup is a separate step.
Silent churn
Customer is still paying (active Stripe subscription) but has zero product usage over the last 30/60/90 days. Revenue looks fine today, but this account will churn at renewal. Early detection buys your CS team time to intervene.
Failed payments aging
Stripe invoices stuck in "past_due" or "uncollectible" status for more than 7/14/30 days, cross-referenced with the HubSpot owner so the right rep gets the alert. Dunning emails only go so far — sometimes a human call recovers the payment.
MRR drift between systems
Stripe says MRR is $47k. HubSpot deal values sum to $52k. The $5k gap is invisible until board prep. Fastero surfaces the per-account discrepancies so Finance can reconcile before the number shows up in a slide.
Uncollected-by-channel
Revenue attributed to a channel or campaign in HubSpot that never converted to actual Stripe payments. Marketing reports pipeline; Finance reports cash. The delta by source tells you which channels generate contracts that don't close financially.
Invoice aging by segment
Average days-to-pay broken down by customer segment, plan tier, or deal owner. Surfaces systemic collection problems — e.g., enterprise annual contracts consistently pay 45 days late, costing you cash-flow forecasting accuracy.
How it works
Live-pull, not batch ETL.
Most revenue tools ingest data into a warehouse on a schedule and query the copy. Fastero queries the Stripe and HubSpot APIs directly at run time. You get current-state answers without maintaining pipelines, connectors, or warehouse tables.
Connect Stripe and HubSpot
OAuth both accounts. Fastero reads Stripe subscriptions, invoices, charges, and customers plus HubSpot deals, contacts, and companies. Read-only access — no writes to either system.
Identity resolution runs automatically
Fastero matches Stripe customer emails to HubSpot contact emails, handling aliases, domains, and multiple contacts per company. No manual CSV mapping. Unmatched records surface for review.
Leak queries execute on schedule
Pre-built queries (won-but-unpaid, silent churn, failed payments, MRR drift) run daily or weekly. Architecture is live-pull — each run queries the Stripe and HubSpot APIs directly, not a stale warehouse copy.
Results delivered to Slack or email
A summary lands in your channel or inbox: how many accounts leak, total dollar exposure, and a link to the detailed breakdown. No login required to read the summary; drill-down opens Fastero.
Honest comparison
Why existing tools miss revenue leaks.
Gong and Clari watch deal forecasts and rep activity — not actual invoices. Baremetrics and ChartMogul chart MRR from your billing tool but have no CRM context. HubSpot native reporting cannot query Stripe. The gap between “deal closed” and “cash received” is a blind spot in every one of these tools.
| Capability | Fastero | Gong / Clari | Baremetrics | HubSpot Reports |
|---|---|---|---|---|
| What it watches | Actual money (Stripe) vs. reported deals (HubSpot) | Deal conversations and forecast accuracy | Stripe/Recurly MRR trends (single source) | CRM pipeline — no billing cross-reference |
| Cross-source join | Stripe + HubSpot identity-resolved at the account level | CRM integration (forecast, not billing) | Single billing source only | Native reports — cannot query Stripe |
| Architecture | Live-pull (queries APIs at run time) | SaaS platform with CRM sync | Webhook ingestion + daily sync | Internal data only |
| Detects won-but-unpaid | Yes — core use case | No (watches calls, not invoices) | No (no CRM data) | No (no billing data) |
| Silent churn (paying, no usage) | Yes — with product-usage source connected | No | Partial — can flag declining MRR | No |
| Pricing | Included in paid plans (from $49/mo) | $100-150/user/month (enterprise contracts) | From $108/mo (based on MRR) | Operations Hub from $800/mo for custom reports |
What this is not
Boundaries you should know before evaluating.
Revenue leak detection is a focused tool, not a full RevOps platform. Here is what it does not do:
Stripe + HubSpot only (today)
The current release supports Stripe as the billing source and HubSpot as the CRM. Recurly, Chargebee, Salesforce, and Pipedrive integrations are on the roadmap but not available. If your stack does not include Stripe or HubSpot, this feature is not useful yet.
Identity resolution is email-based
Matching relies on email addresses across systems. If your Stripe customers use billing@company.com while HubSpot contacts use firstname@company.com, some matches will require manual review. Domain-level fuzzy matching helps but does not eliminate this.
Not a dunning or collections tool
Fastero detects and reports leaks. It does not send payment reminder emails, retry failed charges, or update deal stages automatically. It is the detection layer — your team still acts on the findings via Stripe or HubSpot directly.
Requires both systems to have data
If you track deals in HubSpot but only started using Stripe last month, the historical cross-reference will be thin. The tool is most valuable when both systems have 6+ months of overlapping data to compare.
The math
At $500k ARR, a 5% leak is $25k/year you already sold.
This is not net-new pipeline. It is revenue your team already closed that never converted to cash — or cash that arrived but will silently churn because nobody noticed the customer stopped logging in. The detection cost is $49/month. The first won-but-unpaid deal it surfaces typically pays for a year of the tool.
FAQ
Frequently asked questions.
How much revenue actually leaks between billing and CRM?
Industry estimates (Clari, Gartner) put B2B revenue leakage at 3-8% of total revenue. Common causes: deals marked won but never invoiced, failed payments not escalated, and subscriptions active in billing but churned in the CRM. The exact number depends on your deal volume and handoff process.
Does this require a data warehouse or ETL pipeline?
No. Fastero uses a live-pull architecture — it queries the Stripe and HubSpot APIs directly at scheduled run time. There is no warehouse to maintain, no Fivetran connector to configure, and no stale-data lag. Results reflect the current state of both systems.
How does identity resolution work across Stripe and HubSpot?
Fastero matches Stripe customer email addresses to HubSpot contact emails. It handles common variations: plus-aliases, domain normalization, and multiple contacts per company. Unmatched records are surfaced for manual review rather than silently dropped.
Can I customize which leak types to monitor?
Yes. Each leak type (won-but-unpaid, silent churn, failed payments, MRR drift, etc.) is a separate scheduled query. Enable or disable individually, set thresholds (e.g., flag invoices past-due more than 14 days), and choose delivery channel per query.
How is this different from Baremetrics or ChartMogul?
Baremetrics and ChartMogul chart MRR metrics from a single billing source. They show trends but cannot cross-reference CRM deal data. Fastero joins billing to CRM at the account level — finding deals that never became invoices, or invoices that don't match deal values.
Related pages
Free Shopify spend-leak scan
Paste your Shopify URL and find sold-out products you're still linking to
API & webhooks
Connect Stripe and HubSpot via OAuth in seconds
Triggers & scheduling
Run leak detection on a daily or weekly schedule
Streamlit hosting
Build custom dashboards on top of leak detection outputs
RevOps solutions
Full RevOps use cases beyond leak detection
Stop reconciling by hand every quarter.
Connect Stripe and HubSpot, and let Fastero surface the deals that never became payments. Free to start — no credit card required.