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ROI calculator for software investments

ROI Calculator: When Does Your IT Investment Pay Off?

12 interactive ROI calculators for the most important IT decisions: From custom software to AI integration to the software pain calculator.

In brief

When the IT investment pays off

A custom solution rarely pays for itself on the upfront price alone. The ROI calculator compares two options over five years and shows the break-even month, when the new path costs less than staying with the current one. The model uses documented assumptions from more than 250 software projects.

  • 12 calculators for core IT decisions
  • Five-year TCO comparison
  • Break-even shown as a month, not only a percentage
  • Investment and running costs kept apart
  • Result without email and without registration
  • Guidance, not a fixed-price quote

The result appears in the calculator. Book a consultation or read the documented calculation methodology.

ROI calculator overview

How to choose the right ROI calculator

The overview holds twelve comparison calculators. Each one sets two concrete paths against each other. The right choice follows the decision, not a general IT cost question.

Licenses and commissions against a custom build

Custom software and owned platforms sit against licenses or marketplace commissions. Typical pairs are a custom build against SaaS, an owned shop against a marketplace, and a document portal against email dispatch.

Those calculators live in the software development and platforms category. The make-or-buy frame is the comparison custom or standard software.

Hours against bot and model cost

These calculators set hours of manual work against bot, model, and operating cost. Only the share the team actually stops after go-live counts as a saving.

Start at the AI and automation category. The service description is automation.

Media breaks against one master data source

Media breaks, double entry, and island systems sit against a leading system or an API. The benefit appears when master data is maintained in one place.

The group is the ERP and integration category. Delivery and operations are described under API integration.

Continued operation against stepwise replacement

Rising maintenance, lost knowledge, and outages sit against a stepwise replacement. Continued operation stays in the model so the status-quo curve remains visible.

The calculators are grouped in the legacy category. The approach is legacy modernization.

Outage cost against a maintenance contract

Outage cost and reactive fixes sit against a maintenance contract with fixed response times. The comparison shows whether prevention is cheaper than the next incident.

They belong to the operations category. The service frame is software maintenance.

How to read the break-even month

Across these calculators, break-even often falls between month 8 and month 30. The spread comes from the status quo, not from a single industry average.

A month before 24 fits a usual planning cycle. A month after 48 means checking first whether the saving depends on a workflow the department will actually change.

Grants can lower the upfront spend. In our consulting practice, funding rates for digitalization, AI, and automation often fall between 30 and 50 percent. Which programme matches company size, region, and the project is what the funding calculator shows.

For a decision, run the same inputs three times: cautious, expected, and unfavourable. Open assumptions are cleared in a discovery workshop. Groenewold IT Solutions has maintained these assumptions in Leer, East Frisia, since 2010. Delivery is Made in Germany.

How the break-even result is built

The calculation follows six visible stages. All figures remain planning values until scope and assumptions have been reviewed.

  1. 1. Capture inputs

    The calculator records the visible project, volume, complexity and operating parameters selected on this page.

  2. 2. Add fixed components

    One-off investment and recurring operating components are added separately.

  3. 3. Apply multipliers

    Volumes, time values and rates are multiplied where the model converts effort or incidents into monetary effects.

  4. 4. Create the range

    The calculator applies its documented lower and upper uncertainty factors to the base result; ROI views keep investment and savings visible separately.

  5. 5. Round and calibrate

    Monetary result fields are rounded to the nearest whole euro. Public project-cost components are calibrated with the centrally maintained display factor.

  6. 6. Classify the result

    The result is shown as non-binding guidance. A binding quote requires scope, data, integrations, risks and acceptance criteria to be reviewed.

Included

  • Inputs shown in the calculator
  • Calculator-specific base values and factors
  • Displayed one-off and recurring result components

Not included

  • Requirements not selected in the calculator
  • Unknown data migration and third-party licence costs
  • Taxes, legal advice and a binding delivery commitment

Efficiency or discount factor: A central display factor of 0.7 is applied to public project-cost components to keep all calculators aligned with the currently reviewed pricing basis. It is not a customer-specific discount; customer-entered wages, revenues and existing operating costs are not reduced.

Why this is not a binding quote: The calculator cannot verify complete requirements, third-party dependencies, data quality, legal constraints or acceptance criteria.

Technical responsibility and review

Technical owner
Björn Groenewold
Role
Managing Director and software engineer
Expertise
Software development and software estimation
First published
Last technical review
Price basis
September 2026

Book a call: ROI and IT investment

Thirty minutes to test the calculator you picked against your volumes. The agenda is fixed.

Free & non-binding · 30-minute intro call

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Why the TCO Comparison Is Crucial

Many companies only consider the initial costs of an IT investment. However, the Total Cost of Ownership (TCO) over five years determines which solution is actually more economical. Ongoing licenses, rising personnel costs, and growing maintenance efforts often make the status quo more expensive than it appears at first glance.

Our ROI calculators make these hidden costs visible. They model realistic scenarios with annual price increases, error costs, and scaling effects – so you can make investment decisions based on reliable numbers rather than gut feeling.

License costs rise

SaaS licenses typically increase by 5–15% per year – exponentially with growing user counts

Maintenance gets pricier

Legacy systems cost more every year: knowledge is lost, skilled workers become scarcer

Personnel costs grow

Manual processes become more expensive with every pay raise – automation scales without additional costs

Software Leasing: Spread Your Initial Costs

All our ROI calculators offer an integrated leasing option. This allows you to spread the initial development costs over 72 months (6 years) instead of making a large upfront payment. This improves your cash flow and often shifts the break-even point significantly forward.

Software leasing is treated as a business expense and is tax-deductible. This turns a large investment into a predictable monthly payment – ideal for companies that want to deploy their budget flexibly. The leasing surcharge of 12% over the term is typically significantly cheaper than a bank loan.

More About Software Financing

A business case beyond the cost curve

When a calculator shows a candidate, we turn it into a business case with your volumes and integrations. The case records who owns the hours and the license invoices, and which exclusions stay out of the first release.

FAQ

ROI Calculators

Basics and selection

What is an ROI calculator?

An ROI calculator relates a planned spend to the expected benefit.

This page is the chooser: each calculator compares two concrete paths, not a general IT budget.

How accurate are the results?

The figures follow industry assumptions and your inputs.

They do not replace your accounts. Gaps come mainly from hourly rates, licence tiers, and the share of work the team actually stops after go-live.

Which calculator should I use?

Start with the decision type in the section How to choose the right ROI calculator.

It describes five categories and their pairs: development, AI and automation, ERP and integration, legacy, and operations.

Do the calculators also consider non-monetary benefits?

The calculators count money.

Independence from a vendor, shorter cycle times, and lower outage risk sit beside the curve. They belong in the business case, not in the cost line.

What is the difference between ROI and TCO?

ROI describes benefit against spend, often as the payback month.

TCO is the sum of costs over the useful life. The calculators lay two cost curves on top of each other. Their crossing is the break-even month. The three cost drivers sit in Why the TCO comparison is crucial.

Björn Groenewold – Geschäftsführer Groenewold IT Solutions

Sort the inputs before the call

We check today's cost, the share of work the team can stop, and the systems that must stay connected.

Financing and scenarios

Can I finance the initial costs through leasing?

Yes.

Each calculator can show the upfront spend as a monthly rate. Term, surcharge, and the comparison with a bank loan sit in the section Software leasing.

Are there grants available for IT investments?

Whether a grant lowers the upfront spend depends on company size, region, and the project.

The funding calculator matches programmes to that profile.

How do the calculators handle risk and uncertainty?

The calculators use your inputs as the base.

For a decision, run three passes: cautious, expected, and unfavourable, with about 20 percent variance on the largest cost items. If the unfavourable pass still pays off, the direction holds.

If only the favourable pass works, a discovery workshop clears the open assumptions.

Checks before the first input

Four checks before the first input

Four checks before you enter figures: decision type, the pair you compare, status-quo cost, and how to read the break-even month.

  1. 1. Name the decision type

    Development, AI and automation, ERP and integration, legacy, or operations. Each category has its own overview of the matching calculators.

  2. 2. Name the pair

    Not a general IT budget. Two paths, for example licences against a custom build, or manual hours against an interface.

  3. 3. Collect status-quo cost

    Licences, hours, errors, and outages from the last year. Gut estimates move the break-even month more than the project price.

  4. 4. Read the month

    The break-even month shows when the new cost curve drops below the old one. A percentage alone does not say whether that fits the planning cycle.

Who reads which figure

Finance reads the break-even month and the cash gap before it. Operations checks whether the hours and error costs in the model match last year. IT checks what the model leaves out: data migration, third-party licences, and acceptance criteria.

Bring three numbers to the call: the licence or labour cost you pay today, the share of work the team can actually stop, and the systems that must stay connected. A project check sorts those inputs before a quote.

Case studies sit under references. Neighbouring budget tools sit in the cost calculator overview.

What the call clarifies

  • Which of the two paths is the status quo and which is the change
  • Who owns the hours and the licence invoices used as inputs
  • Which exclusions stay out of the first release

Groenewold IT Solutions has built software in Leer, East Frisia, since 2010. The same people who maintain the calculator assumptions join the call.