Benian Technologies calculates ROI on automation one workflow at a time: measure how many items the workflow handles, how many minutes each one takes, and what errors cost today, then subtract what the automation costs to build, run and maintain. The answer is a payback period in months, not a percentage pulled from a vendor's automation calculator.
Accounts payable is the worked case on this page because it has clean inputs: invoices arrive, get matched, coded, approved and paid, and every step leaves a timestamp. The same method works for order entry, intake forms or month-end reporting. All numbers below are illustrative inputs, not client results. Replace them with yours.
Benian publishes no price for any service. This page names what drives the cost of an automation instead, including the difference between RPA bots and API integrations, and when the honest answer is not to automate at all.
The ROI automation formula for one workflow
Monthly benefit equals hours saved times your loaded hourly cost, plus error costs avoided, plus any revenue the faster process brings in. Monthly cost equals platform and usage fees plus the hours someone spends keeping the automation working. Payback in months equals the one-time build cost divided by the monthly benefit minus the monthly cost.
Loaded hourly cost means wages plus payroll taxes, benefits and overhead, not the hourly wage alone. Your payroll provider or accountant can give you that figure. Use it consistently on both sides of the calculation, because the upkeep hours cost the same as the hours you save.
One rule keeps the number honest: saved hours are only money if they go somewhere. If your AP clerk stays on payroll and the freed time disappears into longer breaks, the ROI is zero. Count saved hours as value only when you can name where they go: an avoided hire, overtime that stops, or a person moved to collections or vendor negotiation.
Inputs to measure before you build
Pull twelve months of history, not a typical week. You need five numbers. Volume: invoices per month, and the spread between the slowest and busiest month. Touch time: minutes per invoice from receipt to posting, timed on a sample of thirty or more, including the ones that go wrong. Exception rate: the share that fail to match, lack a PO, or need a vendor called. Error cost: duplicate payments, late fees and missed early-payment discounts, each counted from your actual records. Cycle time: days from receipt to payment, if late payment is costing you discounts or supplier goodwill.
Most teams overestimate touch time on clean invoices and underestimate it on exceptions. Time both. The exceptions usually decide whether the project pays back, because automation removes clean work first and leaves the hard cases for people.
Worked case: accounts payable automation ROI
Illustrative inputs: 1,200 invoices a month, 9 minutes each by hand. That is 180 hours a month. After automation, 85 percent arrive in a readable format, match a PO and receipt, and need only a 90 second review before approval: about 26 hours. The other 15 percent, 180 invoices, still need a person and take about 12 minutes each because they are the hard ones: 36 hours. New total, 62 hours. Hours saved, about 118 a month.
Multiply 118 by your loaded hourly cost and add the error line. If your records show duplicate payments or missed discounts in the last year, divide that total by twelve and add it. Then subtract the monthly running cost: document extraction usage, which is usually priced per page or per document, the automation platform, and about four hours a month of someone checking failed runs and updating vendor rules.
Divide the one-time build cost by what remains. As a rule of thumb, a payback under twelve months is a strong case. Twelve to twenty-four months can be worth doing if the workflow is stable and will not change systems soon. Beyond that, fix the process first or pick a different workflow.
Where people stay in the loop matters as much as the math. Approvals above a set amount, any change to vendor bank details, and every invoice that fails the three-way match should route to a named person. Vendor bank detail changes are a common fraud path, so they should never be automated end to end.
RPA cost compared with the cost of API integration
Robotic process automation, sold by vendors such as UiPath and Automation Anywhere, runs software bots that click through screens the way a person would. Robotic process automation cost usually includes annual licenses per bot or per runtime, an orchestration product to schedule and monitor bots, implementation work to record and harden each screen step, and ongoing maintenance. That last item is where RPA ROI calculators tend to be optimistic: when a screen layout, field name or login flow changes, the bot breaks, and someone has to repair it.
An API integration connects systems directly through the interfaces they publish, for example your ERP or accounting system's API and your inbox. The cost of API integration is driven by how many systems are involved, whether each has a usable API, how data maps between them, how errors and retries are handled, and how much testing the vendor's sandbox allows. Running cost depends on the platform: some charge per task or per execution, and some, such as n8n, can be self-hosted.
The practical rule: use an API when one exists, because it survives screen redesigns. Use RPA for legacy systems with no API, and budget maintenance hours for it in your ROI calculation from day one. The cost of RPA implementation is rarely the expensive part over three years. Upkeep is.
When automation does not pay back
Skip it, or start smaller, in these cases. Volume is low: at 40 invoices a month, a better template and a shared inbox rule beat a build. The process is unstable: if approval rules change every quarter, you will pay to rebuild. A system change is coming: automating an ERP you plan to replace next year wastes the build. Exceptions dominate: if half your invoices need a phone call, fix vendor onboarding and PO discipline first. And nobody owns it: an automation without a named owner degrades quietly until it stops.
If you cannot measure the inputs above, that is the first project. Start timing the work now and decide in a month with real numbers.
From one workflow to a ranked roadmap
Run the same calculation on your five most manual workflows and rank them by payback. That list is a roadmap. Nobel Tip Kitabevleri, a medical publishing and retail firm, took that route with Benian: every department audited in person, a prioritized automation roadmap delivered, and the company then executed it. The client reports operating costs down 18 percent after execution.
Benian builds the chosen workflows in accounts you own, for example automations in your own n8n account with credentials you hold. The free Opportunity Map at /free-audit ranks your candidate workflows, and a 30-minute call at /book is enough to test one calculation together. Each build is scoped and quoted to its cost drivers.