Accounting · head to head
Billit vs Causal
Billit
Accounting
Belgian invoicing and accounting software with Peppol e-invoicing
- From
- Free
- Rated
- -
Causal
Accounting
Formula-based financial planning and modelling, now sold as Lucanet xP&A
- From
- On request
- Rated
- -
The short version
- Only Billit has a free tier, so it costs nothing to try first.
- Each has a real cost: Billit annual billing required to get approximately 15% discount (one free month included); 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 Billit and Causal actually diverge.
Identical on both: 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 Billit
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.
Billit
- Invoice generation and document management for freelancers and small businessesnot Causal
- E-invoicing and Peppol compliance for European businessesnot Causal
- Recurring billing and payment reminder workflowsnot Causal
Causal
- A finance team whose three-statement Excel model has become too fragile to change safely before every board meetingnot Billit
- A company that needs to show a range of outcomes rather than a single forecast, with uncertainty modelled directly in the driversnot Billit
- 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 Billit
- A group already running Lucanet for consolidation and reporting that wants planning on the same platform rather than a separate toolnot Billit
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Billit
- Annual billing required to get approximately 15% discount (one free month included)
- Additional user seats cost €5 per user per month on top of plan price
- Overage pricing per document decreases with tier, penalizing rapid growth within a 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
Billit
Free- Starter$7.5/month
- Up to 25 documents per month
- Peppol e-invoicing
- Invoice customization
- Growth$25/month
- Up to 500 documents per month
- All Starter features
- Additional documents: €0.25 per document
- Professional$250/month
- Up to 1,000 documents per month
- All Growth features
- Additional documents: €0.15 per document
- Enterprise$null/month
- 1,000+ documents per month
- Custom pricing
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 Causal if
- You need variable-based modelling.
- You also want dimensional breakdowns.
Questions people ask
- Is Billit or Causal better?
- Neither clearly leads. Billit starts at Free and Causal at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Billit or Causal?
- Billit has a free tier; the other does not. Paid plans start at Free for Billit and On request for Causal.
- Does Billit or Causal run on more platforms?
- Both run on Web, so platform support will not decide this one for you.
- Can I use Billit for free?
- Yes. Billit has a free tier, so you can try it without paying. Causal starts at On request.
- What is Billit best used for?
- Billit is most often used for invoice generation and document management for freelancers and small businesses, e-invoicing and peppol compliance for european businesses, recurring billing and payment reminder workflows. Of those, invoice generation and document management for freelancers and small businesses and e-invoicing and peppol compliance for european businesses are not what Causal is typically brought in for.
- What can Billit do that Causal cannot?
- Causal covers Variable-based modelling, Dimensional breakdowns, Scenario and range inputs, Actuals integration.
Answered from the vendors’ own pages
Billit: What does Billit Starter plan include and how much does it cost?
Billit Starter is €7.50 per month (or €22.92 per month with annual billing, roughly 15% off) and supports up to 25 documents per month. All plans include Peppol e-invoicing, invoice customization, quotes, mobile app, bank integration, and payment reminders. Extra documents over the limit cost €0.50 each.
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.
Billit: How much does it cost to add team members to a Billit account?
The first user is included in your plan. Additional team members cost €5 per user per month. Bookkeepers and accountants can access the accountant portal for free.
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.
Billit: What is the difference between Billit Growth and Professional plans?
Billit Growth is €25/month for up to 500 documents monthly (€0.25 per overage). Professional is €250/month for up to 1,000 documents monthly (€0.15 per overage). Both include all features; the only differences are document limit and overage rates.
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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