VB.NET vs C# in 2026: Which Should Your Business Choose? | Blog
TL;DR
VB.NET and C# deliver the same runtime performance because both compile to the same .NET platform. The real differences come down to syntax, hiring, and long-term maintainability. If you already have a stable VB.NET application, keeping it is often the most cost-effective choice. For new projects, C# is generally the better option due to its larger developer community, faster adoption of new features, and stronger long-term ecosystem. Ultimately, the best decision depends on your existing codebase, hiring strategy, and business goals, not language preference alone.
A CTO we talked to last month had two competing proposals on his desk. One team wanted the new internal tool built in C#. The other pushed for VB.NET, since half the existing codebase already ran on it. Honestly? Both sides had a point.
This is how the decision usually plays out in real life. Less a technical debate, more a scheduling argument that happens to involve syntax. Before you bring in a .net development company to build or extend a .NET application, it helps to know what separates these two languages.
They Compile to the Exact Same Thing
Here's the part people skip past. VB.NET and C# both compile down to the same Common Intermediate Language. Same CLR underneath. A method written in VB.NET can call a C# library without any friction, and vice versa.
No runtime performance gap. Whatever difference you're feeling lives in syntax and in how a developer's day goes, not in what the finished app can actually do.
So, if somebody in a meeting insists VB.NET is slower, ask them if they mean VB6. Because that's a different language from a different decade, retired in 2008. It has nothing to do with VB.NET, and the confusion trips up more people than you'd expect.
Where the Syntax Actually Diverges
C# leans on curly braces and semicolons, closer in feel to Java. VB.NET reads more like plain English. If, Then, End If. Some teams find that easier for bringing junior developers up to speed fast. Others just find it slower to type, and honestly, harder to skim once a file runs long.
New language features tend to show up in C# first. Sometimes VB.NET catches up a release later. Sometimes it never gets the feature at all. Microsoft's been pretty open about this: VB.NET's roadmap is built around stability, not chasing new syntax. For a business, that's honestly not a bad trade. Fewer surprises in code that's supposed to run quietly for the next decade.
The Talent Pool Question, Honestly
Now the part that actually moves the needle more than any syntax debate. Go look at job boards. C# postings run into the tens of thousands. VB.NET listings drop off a cliff, and whoever's still applying tends to have fifteen-plus years in, not a fresh degree.
Already running VB.NET? Fine, keep running it. But starting something brand new in it means a longer hiring search, and probably a bigger paycheck for whoever you do find.
When VB.NET Is Still the Right Call
Say your existing VB.NET codebase works fine, and rewriting it in C# would eat up months for nothing functional in return. That's the most common scenario by far, and usually the easiest call in the room.
Maybe your team already knows VB.NET cold. Switching languages just to switch languages doesn't buy you much there. Or maybe you're bolting a feature onto a legacy WinForms app, and pulling in a second language for one feature is more trouble than it's worth.
Staying in VB.NET, in any of those situations, is the boring pick. And boring is underrated in business software. Nobody writes a case study about the app that just kept working.
When C# Makes More Sense
Starting from zero, no legacy code pulling you one direction? C# usually wins by default. Same story if you need Blazor, MAUI, or whatever new language feature ships next quarter. And if hiring at scale is the actual goal, a bigger applicant pool shortens your timeline instead of stretching it out for months.
Most new projects land on C# these days. Not because VB.NET can't do the job. Because the hiring math works out easier.
A Framework That Actually Works for the Decision
Skip the language-preference argument. Ask three things instead, out loud, in the room where it counts. What does the codebase already run on? How hard will it be to hire and retain people for that language five years from now? Does the project actually need something that only ships in one language first, not just whatever a developer happens to prefer that week?
Answer those honestly and the decision basically makes itself. Most teams don't need a heated debate. They need someone brave enough to say the answer they already know.
The Migration Question People Skip
Sometimes the real question isn't which language to write in next. It's whether an existing VB.NET app should move to C# at all. Converting working code just to match somebody's language preference usually torches budget that could go somewhere useful.
Automated converters exist. They'll get you maybe 80% there. The last 20% is where bugs hide, especially around how each language treats integer overflow and late binding. We watched one automated conversion quietly change a rounding rule inside a billing calculation. Took three weeks of customer complaints before anyone traced it back to the migration.
If the app works and nobody's fighting to maintain it, leave the language alone. Put the budget toward what's actually old: the framework version, the UI layer, the database calls. Not the syntax nobody's actually complained about.
Getting the Right Team Either Way
The language matters less than who's writing in it, full stop. A rushed C# hire who's never touched your industry's compliance requirements can do just as much damage as a rusty VB.NET developer who hasn't kept up with modern patterns.
Whichever way you land, look for VB.NET development services or C# specialists who've actually shipped your exact scenario before, legacy extension, greenfield build, or a migration somewhere in between. Not a generalist team learning your codebase while the clock's running.
