Why a feeling isn't actionable — but a number is
Ask any small business owner whether they're paying for software they don't use and almost all of them will say yes. Ask them how much, and the answers get vague. "Probably a couple hundred a month?" "Honestly, I don't know." That vagueness is the reason the waste persists. You can't cancel a feeling. You can cancel a list with dollar amounts next to it.
The good news is that the calculation is not hard. It mostly requires sitting down with a bank statement and a spreadsheet for 60 to 90 minutes. The hard part is psychological — once you total the monthly waste number, you become accountable for doing something about it. That's the whole point.
This guide gives you the exact formula Aurixon uses inside paid AI Stack Reviews. You can run it on your own this week, or use it as the framework for asking a bookkeeper, ops manager, or assistant to run it for you.
Pull every recurring charge, not just the ones you remember
Open your business bank and credit card statements for the last 90 days. Highlight every recurring charge. Be aggressive — anything that looks like a subscription belongs on the list, even if it's only $7 a month.
For annual subscriptions, divide by 12 to get a per-month equivalent. Annual plans are the most-overlooked waste because they only hit once a year and feel like a single decision instead of an ongoing one. They almost always include the largest single line items in your stack.
Common categories trades and service businesses underweight: project management tools you tested for a quarter, CRMs you migrated away from but never canceled, dispatch software, AI writing tools, dormant email marketing subscriptions, second phone-system seats, expired domain renewals, paid Zapier or Make plans that one departed team member used, and any tool whose login email belongs to a former employee.
The four-bucket waste formula
Once you have the master list, sort each tool into exactly one of four buckets. Sum the monthly cost of each bucket separately so you can see where the waste actually lives.
- Bucket 1 — Unused. No login in the last 30 days. Count the full monthly cost.
- Bucket 2 — Duplicated. Another tool you pay for already does the primary job. Count the cost of the duplicate that is used less.
- Bucket 3 — Over-tiered. You're paying for a plan with capacity (seats, contacts, send volume) well above what you actually use. Count the difference between your current plan and the right-sized plan.
- Bucket 4 — Zombie seats. User seats billed for people who left the business, never onboarded, or are no longer active. Count the cost of those seats.
Sum the four buckets. That is your monthly SaaS waste number. Multiply by 12 to see annual exposure. For most small-business operators we work with, this number is between $1,800 and $9,600 per year — but again, your number is your number. The point of the calculation is to make it real.
Don't forget the hidden costs that aren't on the statement
SaaS waste isn't only the subscription line. There are two other costs that don't show up on the bank statement but are often larger than the subscription itself.
Time tax. Every redundant tool requires someone in your business to remember which tool to use for which task, to maintain a second account, to keep two systems in sync, and to context-switch between them. For a typical service business owner, eliminating one redundant tool recovers 30 to 90 minutes per week of low-grade cognitive load. That's not a number to put in the spreadsheet — but it's why people feel relief after consolidating, not just savings.
Data fragmentation. When customer information lives in two CRMs, scheduling lives in two calendars, and invoices live in two billing tools, decisions get slower and reporting gets messier. The cost shows up as missed follow-ups, double-bookings, and "I'll get back to you" emails that never get sent. Calling that out next to your dollar waste number gives you a fuller picture of what consolidation buys.
Turn the number into a written kill list
The calculation is only useful if it produces action. Build a one-page kill list with five columns: tool, monthly cost, bucket, action (cancel, downgrade, consolidate into [name of survivor tool], or negotiate), and target completion date.
Sort the list by monthly cost, descending. Start at the top. Cancellations are often single-click affairs in a billing portal, but a few will require contacting support. Send those emails the same day you build the list — the dead time between deciding and emailing is where most of these never get done.
Negotiations are worth running on any tool above $200/month that you intend to keep. Renewal-time outreach to a vendor asking for a year-over-year price hold, an annual-pay discount, or a tier-down with retained features works more often than people expect.
Lock in the savings with a quarterly rhythm
SaaS waste is not a one-time problem because new tools enter your stack continuously. The fix is rhythmic, not heroic. Block 30 minutes on the calendar quarterly and run the four-bucket formula again. The recurring version of this audit takes a fraction of the time because you already have the master list — you're only updating the verdicts.
If you'd rather have someone else run the whole calculation for you and deliver the kill list in writing, the Aurixon AI Stack Review does exactly that for $99, delivered within 24 hours of intake. It is informational only — Aurixon doesn't cancel subscriptions on your behalf — but it gives you a specific written plan you can execute the same day you receive it.