Is Billin or Karbon better?

Neither clearly leads. Billin starts at €6.6/month and Karbon at $59/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Billin or Karbon?

Billin starts at €6.6/month and Karbon at $59/month.

Does Billin or Karbon run on more platforms?

Both run on Web, so platform support will not decide this one for you.

What is Billin best used for?

Billin is most often used for invoice management, multi-user accounting for freelancers and small businesses. Of those, invoice management and multi-user accounting for freelancers and small businesses are not what Karbon is typically brought in for.

Accounting · head to head

Billin vs Karbon

Billin

Accounting

Spanish online invoicing software for freelancers and small businesses

From: €6.6/month
Rated: -

Full review Website

Karbon

Accounting

Practice management for accounting firms

From: $59/month
Rated: -

Full review Website

The short version

Each has a real cost: Billin plan Basico caps usage at just 5 clients, 1 user and 10 products for EUR 6.60/month, well below what most active small businesses need; Karbon monthly billing option only available for teams of 4 or more users
Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Billin and Karbon actually diverge.

Attributes where Billin and Karbon differ
Attribute	Billin	Karbon
Starting price	€6.6/month	$59/month

Identical on both: pricing model (subscription), free tier (No), platforms (Web), user rating (Not yet rated), category (Accounting).

What people use each for

The jobs each tool is most often brought in to do.

Billin

Invoice managementnot Karbon
Multi-user accounting for freelancers and small businessesnot Karbon

Karbon

Automating client document collection for tax practice intakenot Billin
Tracking all client requests in workflows tied to jobsnot Billin
Aligning hours worked with billable time per engagementnot Billin
Automating period close by connecting practice management to accountingnot Billin
Streamlining client document submission and approval workflowsnot Billin

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Billin

Plan Basico caps usage at just 5 clients, 1 user and 10 products for EUR 6.60/month, well below what most active small businesses need
Plan Pro still caps clients at 50 and users at 3 for EUR 14/month, so any business with more clients must move to the unlimited EUR 23/month tier

Karbon

Monthly billing option only available for teams of 4 or more users
Team plan at $59/month per user minimum cost may be expensive for smaller practices
No seat license discounts published; scaling costs linearly with user count

Pricing, plan by plan

Billin

€6.6/month

Plan Básico$80/year
- 0-5 clients
- 1 user
- Max 10 products
Plan Básico$96/month
Plan Pro$168/year
- 6-50 clients
- 3 users
- Max 50 products
Plan Pro$204/month

Karbon

$59/month

Team$59/month
- Per-user pricing
- Designed for small accounting firms
- Minimum team size of 4 for monthly billing
Business$89/month
- Per-user pricing
- Workflow automation
- Integrations for growing practices
Enterprise$null/mo
- Custom pricing
- Tailored for large accounting firms
- Dedicated support

Which should you pick?

Choose Billin if

Nothing in the data separates Billin from Karbon on the points above - pick on price and on how each one feels to use.

Billin review

Choose Karbon if

Nothing in the data separates Karbon from Billin on the points above - pick on price and on how each one feels to use.

Karbon review

Questions people ask

Is Billin or Karbon better?: Neither clearly leads. Billin starts at €6.6/month and Karbon at $59/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Billin or Karbon?: Billin starts at €6.6/month and Karbon at $59/month.
Does Billin or Karbon run on more platforms?: Both run on Web, so platform support will not decide this one for you.
What is Billin best used for?: Billin is most often used for invoice management, multi-user accounting for freelancers and small businesses. Of those, invoice management and multi-user accounting for freelancers and small businesses are not what Karbon is typically brought in for.

Answered from the vendors’ own pages

Billin: What are Billin's plan costs?

Billin offers three plans: Básico at €80/year (€6.60/month), Pro at €168/year (€14/month), and Ilimitado at €276/year (€23/month). Annual billing includes 18% savings compared to monthly.

Source

Karbon: How much does Karbon cost?

Karbon pricing starts at $59 per user per month (Team plan, billed annually) or $79 per user per month (monthly billing for 4+ users). Business plan is $89/month annual or $99/month monthly. Enterprise pricing is custom.

Source

Billin: Is there a free trial for Billin?

Yes, Billin offers a 30-day free trial with all features included. No credit card is required to start.

Source

Karbon: Is there a discount for annual billing on Karbon?

Yes, Karbon offers annual billing at a discount compared to monthly. Team plan is $59/month annually versus $79/month monthly. Business plan is $89/month annually versus $99/month monthly.

Source

Billin: How many users does each Billin plan include?

Básico includes 1 user, Pro includes 3 users, and Ilimitado includes unlimited users.

Source

Karbon: What is the minimum user requirement for monthly billing on Karbon?

Karbon requires a minimum team size of 4 users to access monthly billing. Teams smaller than 4 must choose annual billing.

Source

Billin vs Karbon

Billin

Karbon

The short version

Where they differ

What people use each for

Billin

Karbon

Where each one falls short

Billin

Karbon

Pricing, plan by plan

Billin

Karbon

Which should you pick?

Choose Billin if

Choose Karbon if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Billin

More on Karbon

Keep looking

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