A few threads this week (Cash crunch, the post-acquisition finance functions question, PT/OT multiples) keep circling the same problem: the deal closed fine, and then the cash didn't show up the way the model said. Here's the receivables checklist I'd run in the first 30 days. 1. Save the aging as of closing day. That's your baseline, and it matters for the working capital true-up. 2. Know which receivables you actually bought. Some deals leave pre-close AR with the seller, some transfer it, some split collections. Customers won't know the difference, so decide who is calling them. 3. Send every customer a short letter with the new remit-to details. A lot of post-close slow pay is customers paying the old account or waiting on a new W-9. 4. Put a name next to every invoice over 60 days. Emmanuel Dubois and Andrew Hippert made the case for a 13-week cash forecast in the finance functions thread, and this is what makes its inflow line believable. 5. Call the top ten balances yourself. Not to collect, just to ask whether anything is holding payment up. You'll find disputes, missing POs and short pays the seller never mentioned. 6. Separate stale from slow. Anything untouched for 90 days or more goes on its own list with a decision: work it, settle it, or reserve it. Don't let it sit at full value. 7. Check whether the seller's write-offs were really one-time. Preston Victory's point about add-backs applies here. If bad debt shows up every year, it's a cost, not an add-back, and it tells you which customers need tighter terms. 8. Set credit terms for new work before you push growth. The Cash crunch thread is the warning: fast growth on long terms with no line runs you out of cash. What would you add? I'm curious what others found in their first month.