How to calculate the ROI of custom software

Software ROI slides often skip baseline and full cost. Then twelve months later nobody can say if the investment worked. Honest ROI starts from this week's numbers, cautious scenarios and a ninety-day gate.

Write baseline, twelve-month cost including people time, and three scenarios. Decide with facts — not with enthusiasm in a vendor demo.

Numbers for a go/no-go

Capture time, error rate or revenue linked to the process before change. Include licences, integration, training and internal hours.

At ninety days compare to baseline. Expand, adjust or stop. A clear no-go is also a successful decision.

Vendors and boundaries

If an external vendor enters, clarify who owns configurations, prompts, mappings and logs. Avoid opaque dependencies. A good partner leaves the company more autonomous at ninety days, not more tied to endless tickets to change one rule.

A detail that makes the difference

Block calendar time for the pilot. Without dedicated slots the project stays «between other things» and never really starts. The operating owner updates status every week in five minutes: done, blocked, next step. It is not elegant. It works.

What to leave out on purpose

The first release is not the moment to prove everything the tool can do. Leave out features without an owner, integrations to little-used systems, automations on rare exceptions and aesthetic reports not tied to a decision. Expanding after the numbers is courage. Expanding before is anxiety dressed as ambition.

Dirty data, dirty results

If records and inputs are messy, any automation or language model amplifies the mess. Dedicate an explicit block to minimal clean-up on the MVP perimeter: duplicates, required fields, out-of-range values. That is not «IT work». It is operational truth.

Training that sticks

Short sessions on the team's real cases. A checklist within reach. A super-user per area for the first fifteen days. Avoid catalogue courses that end in a certificate and zero change the following Tuesday.

How you know you are improving

Do not multiply dashboards. Pick a few indicators tied to the process you are touching — on calculate the ROI of custom software, cycle time, output quality and adoption of the official flow usually suffice. Set baseline in week zero. Review at thirty days. If numbers do not move, change process and inputs before you change the tool.

After the pilot: expand without losing the thread

Widen only if the primary KPI improved, adoption beats the agreed threshold, the exception backlog is under control and the owner is still in charge. Otherwise reduce scope or strengthen training. A meeting every two weeks is enough: numbers, top exceptions, decisions. No status theatre.

Document the mapping or happy-path rules on a living page. When someone new joins, that page saves three weeks of oral tradition. Light governance is not bureaucracy: it is operating memory.

After the pilot: expand without losing the thread

Widen only if the primary KPI improved, adoption beats the agreed threshold, the exception backlog is under control and the owner is still in charge. Otherwise reduce scope or strengthen training. A meeting every two weeks is enough: numbers, top exceptions, decisions. No status theatre.

Document the mapping or happy-path rules on a living page. When someone new joins, that page saves three weeks of oral tradition. Light governance is not bureaucracy: it is operating memory.

Vendors and boundaries

If an external vendor enters, clarify who owns configurations, prompts, mappings and logs. Avoid opaque dependencies. A good partner leaves the company more autonomous at ninety days, not more tied to endless tickets to change one rule.

A detail that makes the difference

Block calendar time for the pilot. Without dedicated slots the project stays «between other things» and never really starts. The operating owner updates status every week in five minutes: done, blocked, next step. It is not elegant. It works.

What to leave out on purpose

The first release is not the moment to prove everything the tool can do. Leave out features without an owner, integrations to little-used systems, automations on rare exceptions and aesthetic reports not tied to a decision. Expanding after the numbers is courage. Expanding before is anxiety dressed as ambition.

Dirty data, dirty results

If records and inputs are messy, any automation or language model amplifies the mess. Dedicate an explicit block to minimal clean-up on the MVP perimeter: duplicates, required fields, out-of-range values. That is not «IT work». It is operational truth.

Training that sticks

Short sessions on the team's real cases. A checklist within reach. A super-user per area for the first fifteen days. Avoid catalogue courses that end in a certificate and zero change the following Tuesday.

How you know you are improving

Do not multiply dashboards. Pick a few indicators tied to the process you are touching — on calculate the ROI of custom software, cycle time, output quality and adoption of the official flow usually suffice. Set baseline in week zero. Review at thirty days. If numbers do not move, change process and inputs before you change the tool.

How you know you are improving

Do not multiply dashboards. Pick a few indicators tied to the process you are touching — on calculate the ROI of custom software, cycle time, output quality and adoption of the official flow usually suffice. Set baseline in week zero. Review at thirty days. If numbers do not move, change process and inputs before you change the tool.

After the pilot: expand without losing the thread

Widen only if the primary KPI improved, adoption beats the agreed threshold, the exception backlog is under control and the owner is still in charge. Otherwise reduce scope or strengthen training. A meeting every two weeks is enough: numbers, top exceptions, decisions. No status theatre.

Document the mapping or happy-path rules on a living page. When someone new joins, that page saves three weeks of oral tradition. Light governance is not bureaucracy: it is operating memory.

Vendors and boundaries

If an external vendor enters, clarify who owns configurations, prompts, mappings and logs. Avoid opaque dependencies. A good partner leaves the company more autonomous at ninety days, not more tied to endless tickets to change one rule.

A detail that makes the difference

Block calendar time for the pilot. Without dedicated slots the project stays «between other things» and never really starts. The operating owner updates status every week in five minutes: done, blocked, next step. It is not elegant. It works.

What to leave out on purpose

The first release is not the moment to prove everything the tool can do. Leave out features without an owner, integrations to little-used systems, automations on rare exceptions and aesthetic reports not tied to a decision. Expanding after the numbers is courage. Expanding before is anxiety dressed as ambition.

Dirty data, dirty results

If records and inputs are messy, any automation or language model amplifies the mess. Dedicate an explicit block to minimal clean-up on the MVP perimeter: duplicates, required fields, out-of-range values. That is not «IT work». It is operational truth.

Training that sticks

Short sessions on the team's real cases. A checklist within reach. A super-user per area for the first fifteen days. Avoid catalogue courses that end in a certificate and zero change the following Tuesday.

Training that sticks

Short sessions on the team's real cases. A checklist within reach. A super-user per area for the first fifteen days. Avoid catalogue courses that end in a certificate and zero change the following Tuesday.

How you know you are improving

Do not multiply dashboards. Pick a few indicators tied to the process you are touching — on calculate the ROI of custom software, cycle time, output quality and adoption of the official flow usually suffice. Set baseline in week zero. Review at thirty days. If numbers do not move, change process and inputs before you change the tool.

After the pilot: expand without losing the thread

Widen only if the primary KPI improved, adoption beats the agreed threshold, the exception backlog is under control and the owner is still in charge. Otherwise reduce scope or strengthen training. A meeting every two weeks is enough: numbers, top exceptions, decisions. No status theatre.

Document the mapping or happy-path rules on a living page. When someone new joins, that page saves three weeks of oral tradition. Light governance is not bureaucracy: it is operating memory.

In short: the operating framework

Short version to bring to a meeting.

Steps

1. Write the business goal in one sentence + out of scope.
2. Name owner and sponsor.
3. Define an MVP with acceptance criteria.
4. Run a real-user pilot and log exceptions.
5. Review KPIs; go/no-go on expansion.

Quick checklist

• Goal written down.
• Owner active.
• MVP defined.
• Pilot planned.
• KPI baseline set.

KPIs (max three)

• Average process time (before/after).
• Error or rework rate.
• % usage of the official flow.

Practical value (and the next step)

Honest ROI compares baseline, full cost and cautious scenarios. Practical value is deciding with numbers — not buying on enthusiasm and discovering hidden costs later.

Write this week's baseline, twelve-month cost and three scenarios. At ninety days do a go/no-go with facts, not feelings.

If you want a second opinion on the scope of your case, Foggetti Studio can help you read the current state and define a realistic MVP.