Carta Stripe Automated Exercise Payment Reconciliation
Every morning, WebRun opens Carta to collect expected option exercise payments due, cross-references them against Stripe payments received in the last 24 hours, flags any unmatched or short payments, and posts a reconciliation digest to your finance Slack channel so discrepancies are caught and resolved before end of day.
How can I reconcile option exercise payments from Stripe against my Carta cap table daily?
Every morning, WebRun collects expected option exercise payments from Carta and cross-references them against Stripe receipts from the last 24 hours. Matched payments are summarised and unmatched or short payments are flagged, all in a daily Slack digest for your finance team. Discrepancies are caught the same day they occur, before they compound.
- Unmatched option exercise payments are flagged in Slack the same morning they occur
- Matched payments are confirmed daily with no manual cross-referencing between Carta and Stripe
- CFO and finance lead are tagged on discrepancies for same-day resolution
Built for startup CFOs · finance teams · equity managers · accounting teams
What does WebRun do on every run?
The exact actions WebRun takes, in order - in plain language, so you can adjust anything.
-
WebRun signs in and gets to work
Opens
app.carta.comin a real browser with your saved login - no setup, no API keys. -
1
Carta - collect expected exercise payments from pending grants
carta.com
WebRun opens Carta to collect expected exercise payments from pending grants. - Open Carta and retrieve option exercise notices submitted in the last 24 hours
- For each exercise, capture the holder name, share count, strike price, and total payment expected
- Build a list of expected payments keyed by holder name and exercise date
Done when All expected option exercise payments from the last 24 hours are collected from Carta.
-
2
Stripe - match received payments against expected amounts
stripe.com
WebRun opens Stripe to match received payments against expected amounts. - Open Stripe and retrieve payments received in the last 24 hours tagged as equity exercises
- Match each payment to the corresponding Carta exercise record by holder name or reference
- Flag payments that are unmatched, short, or have no corresponding Carta record
Done when Each Stripe payment is matched or flagged as unmatched against the Carta exercise list.
-
3
Slack - post reconciliation digest with unmatched items flagged
slack.com
WebRun opens Slack to post reconciliation digest with unmatched items flagged. - Post a daily reconciliation digest to the finance Slack channel
- List matched payments in a green summary and unmatched or short payments in a flagged section
- Tag the CFO and finance lead for any unmatched items requiring same-day resolution
Done when Finance has a complete same-day reconciliation digest in Slack with all gaps clearly flagged.
How is each run configured?
Secure by default
Connect once, stays signed in
WebRun signs in once and keeps each session in a persistent environment, so every run picks up right where it left off.
Every action is checked against this policy before it runs.
Questions, answered
Will it issue refunds or request additional payments from holders automatically?
No. WebRun only identifies discrepancies and posts them to Slack. All payment adjustments, refund requests, or follow-up collection actions are handled by your finance team after reviewing the digest.
What counts as an unmatched payment?
A Stripe payment is flagged as unmatched if WebRun cannot find a corresponding Carta exercise record for the same holder and amount within a 5% tolerance. A Carta exercise record is flagged if no Stripe payment is found within 24 hours of the exercise submission.
Can it handle partial exercise payments where a holder pays in instalments?
Yes. You can configure WebRun to allow partial matches up to a threshold you set. Partial payments are noted in the digest with the balance still outstanding rather than flagged as fully unmatched.
Related templates
Put this on autopilot.
Turn it on in minutes - or have our team set it up for you.