As of May 2026

Delphi Development Costs: Transparent Estimates

Calculate the costs for Delphi development, maintenance, and modernization.

Delphi Development Costs – What Does Your Delphi Project Cost?

Delphi cost calculator

What does your Delphi project cost?

Calculate the cost for maintenance, enhancement or migration

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What do you want to implement?

Delphi Development Costs – Overview (JavaScript required)

Typical costs: Maintenance & support from approx. €2,100, extension from approx. €9,100, modernization from approx. €22,400, migration from approx. €39,200 (excl. VAT). Enable JavaScript for an interactive calculation.

Delphi Development Pricing Overview

The costs for Delphi projects depend on scope, complexity, and desired features.

Small Application

€10,500 – 21,000

Simple desktop app
Local database
Standard UI
4–8 weeks development

Typical

Business Application

€28,000 – 56,000

Multi-user system
SQL Server integration
Reports & export
8–16 weeks development

Industrial Software

€56,000 – 140,000+

Complex logic
Hardware integration
Real-time processing
4–12+ months development

Why Delphi Is Still Relevant Today

Delphi (Object Pascal) has a loyal user base – especially in the German SME sector. Many business-critical applications have been running stably for decades. Native Windows performance, rapid development, and direct hardware access are strengths that modern frameworks often cannot offer.

The problem: experienced Delphi developers are scarce. When the original developer leaves, many companies face a serious challenge. We have over 20 years of Delphi experience and also take on software without documentation.

Modernization vs. Migration

Not every old Delphi application needs to be replaced. Often, modernization is the better path: updating to current Delphi versions, new UI frameworks (VCL/FMX), improved database connectivity, adding web services.

Migration to .NET, Electron, or web makes sense when: dealing with very old unstructured code, wanting cross-platform support, or when modern web technologies are needed. We provide honest advice on what is optimal for your situation.

All Delphi Versions Supported

We work with all Delphi versions:

Turbo Pascal, Delphi 1–7: Legacy maintenance and migration
Delphi 2005–XE8: Unicode migration, VCL updates
Delphi 10+: Modern development, FMX, REST
Lazarus/FreePascal: Open-source alternative

Why Delphi Expertise With Us?

Years of Experience

Over 20 years of Delphi experience – from Delphi 5 to the current version.

Modernization

We bring old Delphi systems up to date or migrate them carefully.

Reliability

Your business-critical Delphi software stays stable and future-proof.

Delphi Development Costs

Costs & budget

How much does new Delphi development cost?

A simple desktop application: €10,500 – 21,000 excl. VAT. A medium business application: €28,000 – 56,000 excl. VAT. Complex industrial software: €70,000+ excl. VAT. Delphi suits performant Windows applications.

What does maintenance of existing Delphi software cost?

Depending on scope: €210 – 1,050/month excl. VAT. One-off bug fixes: from €350 excl. VAT. Code analysis on takeover: from €1,400 excl. VAT. Experienced Delphi developers are rare – we have over 20 years of expertise.

What does migration from Delphi to modern technologies cost?

Stepwise migration: €21,000 – 56,000 excl. VAT. Full redevelopment: €35,000 – 140,000+ excl. VAT. A hybrid approach is often sensible: keep core systems in Delphi, build new modules modern.

Björn Groenewold – Geschäftsführer Groenewold IT Solutions

Calculate Delphi costs

Use our calculator for an initial estimate of your Delphi project.

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Technology & versions

Which Delphi versions do you support?

All since Delphi 5: D5, D7, 2005–XE8, Delphi 10+. Also Turbo Pascal and Lazarus/FreePascal. Migration to current versions is possible.

Should I modernise Delphi or migrate?

Well-structured Delphi code can often be modernised cost-effectively. For very old or poorly maintainable code, migration to .NET or web may be better – we recommend after code analysis.

Is Delphi still future-proof?

Yes: Embarcadero actively develops Delphi (FireMonkey, REST integration, cross-platform). For new projects it is still worth comparing modern alternatives.

Request a consultation

Which solution fits your project? We advise you without obligation.

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Takeover & support

Why are Delphi developers so hard to find?

Delphi is less widespread than C# or JavaScript; many specialists have retired. We have over 20 years of experience and also take over undocumented projects.

Can you take over Delphi software without documentation?

Yes – after code analysis (from €1,400 excl. VAT) we assess condition and maintainability. With well-structured code takeover is usually straightforward.

Migration & future-proofing

When is migration from Delphi to .NET or web sensible?

When new developers are scarce, UI modernisation needs deep Delphi skills or cloud deployment is required. We check whether API wrapping or redevelopment is more economical.

Can Delphi applications still be maintained?

Yes: Embarcadero maintains Delphi actively (currently version 12 Alexandria). We support applications from D5 to D12 – components, database access and Windows APIs included.

What does porting a Delphi application to .NET cost?

Depending on codebase, database access and UI complexity: €21,000 – 105,000 excl. VAT. Proprietary components (VCL, Indy, FastReport) and business logic are decisive – we quote reliably after initial analysis.

More about Delphi development

Typical pricing models (overview)

Comparison: typical pricing models for software and IT projects
Model	When it fits	Budget & flexibility	Typical risks
Fixed price (fixed scope)	Clearly defined scope, stable requirements, repeatable delivery.	Predictable total cost; little room for change without a change order.	Scope creep leads to change orders or quality trade-offs.
Time & Material	Discovery, legacy, evolving requirements, or close collaboration.	Maximum flexibility; budget transparent via hourly or daily rates.	Without prioritisation, effort can grow—backlog and reviews matter.
Retainer / maintenance package	Ongoing operations, updates, small features, and support.	Agreed capacity per month; predictable follow-on cost.	Large changes may still need a separate estimate.
Hybrid (milestone + T&M)	MVP or phased releases with clear go-lives, then iterate.	Core delivery fixed price; extensions on a time-and-materials basis.	Define contractually what is in scope vs. extra work.

Calculators on this page provide indicative ranges; we choose the right model with you based on risk, scope, and planning horizon.

Costs & next steps

Delphi development costs: transparent estimates – maintenance, modernization and migration.

The ranges shown are indicative. For a binding quote we discuss scope, priorities and funding options in a free intro call. Many digitalization projects qualify for grants – try our funding calculator.

Browse all cost calculators, explore services and typical solutions. Questions about Delphi Development? Contact us.

After using the Delphi Development calculator, validate assumptions in a short intro call.

What we align in the call

Scope, risks, and funding options
Milestones and documented exclusions
Transparent quote without hidden line items

Costs for Delphi Development in context

Scope, risk, and quality expectations drive the range
Include operations, maintenance, and grants
Consulting and development delivered from Germany

Browse all cost calculators in the costs overview.