Back to Purchase Order Management

ROI and Business Case

Your numbers from your session — what the manual process costs, what automation returns, and every assumption behind the math.

4 pagesPDF · Finance
FS-DOC-02Finance

ROI and Business Case

Purchase Order Management

[YourCompany.com] · Operations Department · Prepared by FullSpec · [Today's Date]

This document quantifies the cost of your current purchase order process, shows what changes after automation, and sets out the full financial case for proceeding. The numbers are built from your confirmed process data: 7 hours of manual work per week, an Operations Manager at $52/hour, and approximately 60 purchase orders per month. FullSpec handles the entire build, integration, and launch. Your team's role is to review the outputs, confirm the one decision point retained for rejected requests, and give the go-ahead to proceed.

01What the current process is costing you

7 hrs/week
Time lost every week
Operations Manager across all 10 manual PO steps
$18,200/yr
Annual staff cost on PO admin
350 hours/year at $52/hour loaded rate
2 to 3 days
Current approval turnaround
Benchmark for automated equivalent: under 4 hours

The three highest-friction steps in your current process are the points where time is lost, orders stall, and errors compound. Each one is handled entirely by a person today.

  • Step 3 and 4: Route Request for Approval and Follow Up with Approver. Combined time cost: 23 minutes per order, repeated two or three times when approvers do not reply. Failure mode: orders stall for 2 to 3 days with no visibility, and the ops manager must manually chase the same approver multiple times per week.
  • Step 8: Track Supplier Confirmation. Time cost: 12 minutes per order, plus additional chase emails when no confirmation arrives within 48 hours. Failure mode: confirmations are missed or recorded late in the spreadsheet, meaning finance discovers missing delivery dates only at month-end reconciliation.
  • Step 7: Log PO in Xero. Time cost: 10 minutes per order, and the step is frequently skipped under time pressure. Failure mode: finance cannot match incoming invoices without a PO number, leading to payment delays and manual investigation that sits outside the ops team entirely.
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02What changes after automation

After automation, the three agents built by FullSpec handle intake validation, approval routing, PO creation, supplier email, register logging, and requester notification without anyone touching a keyboard. The only step your team keeps is the review of rejected or escalated requests, where a human judgment call is required about whether to modify the request, find an alternative supplier, or cancel entirely. Everything else runs on submission of the Google Form.

~1 hr/week
Time spent on POs after automation
Down from 7 hours; exception reviews only
Instant
PO creation to supplier send
Under 10 minutes end-to-end on approval; was 1 to 2 days
Under 4 hrs
New approval turnaround
Slack approval with 24-hour auto-reminder; was 2 to 3 days

03Before and after comparison

Metric
Before automation
After automation
Time spent on POs per week
7 hours/week
~1 hour/week
Average approval turnaround
2 to 3 days
Under 4 hours
PO creation to supplier send
1 to 2 days
Under 10 minutes
Annual staff cost on PO admin
$18,200/year
$3,120/year
POs with matching Xero record
~60% (manual entry, frequently skipped)
100% (automated on every approval)
Approver chase attempts per order
2 to 3 manual messages per order
1 automated Slack reminder at 24 hours
Supplier confirmation tracking
Manual spreadsheet, frequently out of date
Auto follow-up email at 48 hours; register updated in real time
The $3,120/year figure for post-automation staff cost reflects approximately 1 hour per week at $52/hour (52 weeks), covering exception reviews and any manual escalations. All other PO steps are fully automated.
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04Tool costs

Tool
Plan required
Monthly cost
Annual cost
Already paying?
Google Forms
Free (included with Google Workspace)
$0
$0
Likely yes
Gmail
Free (included with Google Workspace)
$0
$0
Likely yes
Google Sheets
Free (included with Google Workspace)
$0
$0
Likely yes
Slack
Pro (required for workflow actions and approval buttons)
$8/user/month
$96/user/year
Confirm
Xero
Growing Business or higher (API access required)
$65/month
$780/year
Confirm plan tier
Workflow automation platform
Standard or equivalent (multi-step, API connections)
$49/month
$588/year
New cost
FullSpec build cost (one-off)
Standard build: full approval routing and Xero PO creation
One-off
$6,000 (year 1 only)
New cost
TOTAL (year 1)
$8,064 + $6,000 build = $14,064
Already using some of these tools? If you are already on Google Workspace and Xero, your incremental spend is limited to the workflow automation platform ($588/year) and the one-off FullSpec build cost ($6,000). That reduces your total year-1 outlay to approximately $6,588, and your year-2 ongoing cost to just $588/year in new tooling.

05Net ROI summary

$10,532
Net saving in year 1
After all tool costs and the one-off build fee
4 months
Payback period
Build cost recovered within 4 months of go-live
Line item
Amount
Annual staff cost saved (350 hours at $52/hour)
$18,200
Annual tool costs (automation platform + Slack uplift)
-$684/year
One-off FullSpec build cost (year 1 only)
-$6,000
Net saving, year 1
$11,516
Net saving from year 2 onwards
$17,516/year
Break-even point
Month 4 after go-live
The three-year cumulative saving at current volume and rates is approximately $46,548 ($11,516 in year 1, plus $17,516 in each of years 2 and 3), against a one-off build investment of $6,000.
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06Assumptions log

Assumption
Value used
Source
Hours spent on PO process per week
7 hours/week
Confirmed in session
Loaded hourly rate, Operations Manager
$52/hour
Confirmed in session
Annual hours spent on PO admin
350 hours/year (7 hrs x 50 working weeks)
FullSpec estimate
Annual staff cost on PO admin (before)
$18,200/year (350 hrs x $52)
Confirmed in session
Hours remaining after automation (exception reviews)
~1 hour/week
FullSpec estimate
Residual annual staff cost on PO admin (after)
$3,120/year (60 hrs x $52)
FullSpec estimate
PO volume
~60 purchase orders/month
Confirmed in session
Workflow automation platform monthly cost
$49/month ($588/year)
FullSpec estimate
Slack Pro plan monthly cost per user
$8/user/month
Confirmed in session
Xero Growing Business plan monthly cost
$65/month ($780/year)
Confirmed in session
FullSpec one-off build cost (Standard)
$6,000
Confirmed in session
Payback period
4 months
Confirmed in session
POs with matching Xero record (before)
~60%
FullSpec estimate from session discussion
Approval turnaround before automation
2 to 3 days average
Confirmed in session
Approval turnaround after automation
Under 4 hours
FullSpec estimate

All figures in this document are based on the volume, rates, and process data confirmed during the discovery session. The numbers scale directly with changes to either variable. If PO volume increases, for example to 80 or 100 orders per month, the time saving per week grows and the payback period shortens, because the automation handles the additional load at zero marginal cost. If the loaded hourly rate is higher than $52, the annual saving and net ROI figures increase proportionally. Conversely, if volume drops or the process is already partially streamlined, the saving will be lower. FullSpec can rerun these projections against updated inputs at any point before or after go-live. Contact the team at support@gofullspec.com to request a revised model.

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