Accounting · head to head
Billin vs Causal
Billin
Accounting
Spanish online invoicing software for freelancers and small businesses
- From
- €6.6/month
- Rated
- -
Causal
Accounting
Formula-based financial planning and modelling, now sold as Lucanet xP&A
- From
- On request
- Rated
- -
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; Causal causal was acquired by Lucanet on 31 October 2024 and the independent brand has been retired in favour of Lucanet xP&A, so the roadmap, support and pricing you buy are Lucanet’s and not the ones the product built its reputation on.
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which Billin and Causal actually diverge.
Identical on both: free tier (No), platforms (Web), user rating (Not yet rated), category (Accounting).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Billin
Nothing recorded that Causal does not also cover.
Only in Causal
- Variable-based modelling
- Dimensional breakdowns
- Scenario and range inputs
- Actuals integration
- Interactive dashboards
- Version history
- Spreadsheet import
- Workforce and headcount planning
What people use each for
The jobs each tool is most often brought in to do.
Billin
- Invoice managementnot Causal
- Multi-user accounting for freelancers and small businessesnot Causal
Causal
- A finance team whose three-statement Excel model has become too fragile to change safely before every board meetingnot Billin
- A company that needs to show a range of outcomes rather than a single forecast, with uncertainty modelled directly in the driversnot Billin
- A budget owner outside finance who should adjust hiring or spend assumptions and see the effect without being given edit access to the master spreadsheetnot Billin
- A group already running Lucanet for consolidation and reporting that wants planning on the same platform rather than a separate toolnot 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
Causal
- Causal was acquired by Lucanet on 31 October 2024 and the independent brand has been retired in favour of Lucanet xP&A, so the roadmap, support and pricing you buy are Lucanet’s and not the ones the product built its reputation on.
- Self-serve pricing is gone: the old causal.app pricing page now redirects to a Lucanet solution page, so what was a transparent product you could sign up for is an enterprise sales conversation with no published rate.
- The variable-based model is a genuine departure from spreadsheet thinking, so an accountant fluent in Excel must relearn how to express a model, and the team members who could previously all edit the forecast often cannot at first.
- Deep Excel compatibility is limited by design; complex existing workbooks with macros, circular references or heavy lookups do not import cleanly and have to be rebuilt, which turns a tool evaluation into a modelling project.
- Consolidation, statutory reporting and multi-entity currency handling are weaker than in dedicated corporate performance management suites, so a group with several legal entities usually needs Lucanet’s other modules alongside it, raising the real cost well past the planning tool alone.
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$204/month
Causal
On request- Lucanet xP&A (formerly Causal)$undefined/year
- Variable-based planning models with dimensions and scenarios
- Actuals integration from accounting, CRM and warehouse sources
- Interactive dashboards for non-finance stakeholders
Which should you pick?
Choose Billin if
Nothing in the data separates Billin from Causal on the points above - pick on price and on how each one feels to use.
Choose Causal if
- You need variable-based modelling.
- You also want dimensional breakdowns.
Questions people ask
- Is Billin or Causal better?
- Neither clearly leads. Billin starts at €6.6/month and Causal at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Billin or Causal?
- Billin starts at €6.6/month and Causal at On request.
- Does Billin or Causal 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 Causal is typically brought in for.
- What can Billin do that Causal cannot?
- Causal covers Variable-based modelling, Dimensional breakdowns, Scenario and range inputs, Actuals integration.
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.
SourceCausal: Does Causal still exist?
The product does, as Lucanet xP&A. The independent Causal brand and self-serve offering have been retired following the October 2024 acquisition.
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.
SourceCausal: What does it cost now?
Nothing is published. The former pricing page redirects to Lucanet, and the product is quoted as part of the Lucanet CFO Solution Platform.
Billin: How many users does each Billin plan include?
Básico includes 1 user, Pro includes 3 users, and Ilimitado includes unlimited users.
SourceCausal: Can I import my existing Excel model?
Simple workbooks import. Models with macros, circular references or heavy lookup chains have to be rebuilt around named variables, which is the real migration cost.
Causal: Is it a replacement for a consolidation tool?
No. It plans and forecasts. Statutory consolidation and multi-entity reporting sit in Lucanet’s other modules.
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