After the deal · 8 min read

You bought a project. Now what?

The deal closed, the code is yours, and the instinct is to start changing everything. Don't. The first 90 days decide whether the thing you bought grows or quietly falls apart — here's how to run them.

VThe Vertos teamUpdated July 2026

The most expensive mistake a new owner makes isn't paying too much. It's walking in on day one and "improving" things — raising prices, cutting costs, redesigning the onboarding — before they understand why any of it worked in the first place. The first three months aren't about transformation. They're about not breaking what you just paid for.

Think of it like buying a house with people living in it. You don't knock down walls the first week. You live in it, learn where the light falls and which floorboards creak, and then you renovate. Same here: stabilize, understand, and only then reach for the big levers. Here's the 90-day version, phase by phase.

Take the keys — carefullyDays 1–30

Goal: get full control, lock it down, and change nothing you don't have to.

Finish every transfer and confirm access. Code, domain, hosting, database, third-party services. If you can't log into it, you don't fully own it yet.
Change every password, revoke the old owner's access. Not because they're shady — because it's just hygiene. Rotate keys and secrets too.
Move payments and accounting onto you. Your Stripe, your bank, your books. Do it early so no revenue routes to the wrong place.
Freeze a baseline. Snapshot the numbers on day one — MRR, churn, active users, support volume — so you can tell later whether you helped or hurt.
Send one calm customer message. New ownership, same product, same support, nothing changing today. Silence breeds churn; a two-line note prevents it.

Learn the machineDays 31–60

Goal: understand how it really works before you touch anything important.

Shadow, don't steer. Read the support tickets, watch how users actually use it, follow the money. Spend these weeks observing before deciding anything.
Extract the founder's brain. While you still have their attention, document everything — architecture, deploy steps, the weird edge cases — into a runbook. This is the knowledge that walks out the door if you don't capture it.
Make small, safe wins. Tidy the onboarding, fix an obvious support pain, clean up a dashboard. Visible progress that can't destabilize anything.

Now grow itDays 61–90

Goal: you finally understand it — so start turning the big levers.

Test a growth channel. The previous owner probably left one obvious channel untouched. Try it. This is where your edge as the new operator shows up.
Run a careful pricing experiment. Now that you understand the value it delivers, test it — on new customers first, gently.
Ship the feature customers keep asking for. You've read 60 days of tickets — you already know what it is.
The mistake that quietly kills the deal: over-optimizing too early. Aggressive price hikes and sudden cost cuts made in month one — before you understand the product's role in your customers' day — erode trust faster than they add revenue. The strongest returns go to owners who bring a real growth playbook and the patience to run it in the right order.

You didn't just buy code and customers. You bought a working system you don't yet understand. Spend the first 90 days earning the right to change it.

Not there yet? If you're still choosing what to buy, start with our deal-sourcing guide and vet it with the due-diligence checklist — a clean, well-documented project makes this whole 90 days ten times easier.

Common questionsFrequently asked questions

What should you do in the first 90 days after buying a side project?

Stabilize before you transform. Days 1–30: complete every asset transfer, change all passwords and revoke the old owner’s access, set up your own payments and accounting, freeze a KPI baseline, and send customers a short continuity message. Days 31–60: shadow how it really runs and document the founder’s knowledge into a runbook, with only small, safe improvements. Days 61–90: start executing growth — pricing tests, new channels, features.

What’s the biggest mistake new owners make after an acquisition?

Over-optimizing too early. Aggressive pricing changes, sudden cost cuts, or big product changes made before you understand the product’s role in customers' workflows tend to erode trust and drive churn. The first 90 days are for stabilization and understanding, not transformation.

How do you take over a website or app after buying it?

Confirm every asset transferred (code, domain, hosting, accounts, mailing list), immediately change passwords and revoke the previous owner’s access, move billing and analytics onto your own accounts, and message customers about the ownership change and continuity. Then spend a few weeks observing before you change anything material.

Find your next
head start.

Browse early-stage projects with real code and traction on Vertos — every listing comes with a free AI Analysis of the actual source and secure crypto payments, so your first 90 days start on solid ground.

Browse projects →

Stabilize first. Grow second. In that order.
— The Vertos team

Sources & notes

Framework reflects standard 2026 post-acquisition practice for small SaaS and websites. Reference reading: Website Closers, Flippa. General guidance, not legal or financial advice.