Softwr

Accounting · head to head

BlackLine vs Lago

BlackLine logo

BlackLine

Accounting

Close automation that sits on top of your ERP, covering reconciliations, journals and close task control

From
$29/month
Rated
-
Full reviewWebsite
Lago logo

Lago

Accounting

Open-source billing infrastructure for usage-based models

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Lago has a free tier, so it costs nothing to try first.
  • Each has a real cost: BlackLine it sits on top of the ERP rather than replacing anything, so it is an additional annual platform cost against a general ledger you are already paying for, and the return has to come from reduced close effort and audit findings rather than from retiring another system.; Lago free tier limited to 10,000 entities per month with 5M event cap
  • They diverge on capability: BlackLine covers Account reconciliation, Lago covers Real-time usage metering.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which BlackLine and Lago actually diverge.

Attributes where BlackLine and Lago differ
AttributeBlackLineLago
Starting price$29/monthFree
Pricing modelsubscriptionFreemium with optional paid tiers
Free tierNoYes
PlatformsWebWeb, Cloud, Self-hosted, On-premise, VPC
Founded2001Unknown

Identical on both: 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 BlackLine

  • Account reconciliation
  • Risk based certification
  • Journal entry management
  • Close task management
  • Transaction matching
  • Intercompany
  • Variance analysis
  • Evidence attachment

Only in Lago

  • Real-time usage metering
  • Multiple pricing models
  • Automated invoicing
  • Prepaid credits
  • Entitlements
  • Multi-currency support
  • Payment orchestration
  • Revenue analytics

What people use each for

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

BlackLine

  • A listed company whose external auditors have raised findings about reconciliation evidence and reviewer sign offnot Lago
  • A group with dozens of entities where the close depends on someone chasing spreadsheets by email every monthnot Lago
  • A finance team matching very high volumes of bank or payment processor transactions that no longer fit in a workbooknot Lago
  • An organisation trying to shorten a close that runs past working day ten and cannot see where the time goesnot Lago

Lago

  • Building usage-based billing for high-volume APIs and infrastructurenot BlackLine
  • Implementing metered billing for AI and tokenized servicesnot BlackLine
  • Creating subscription and hybrid pricing modelsnot BlackLine
  • Managing multi-currency billing for global companiesnot BlackLine
  • Maintaining billing infrastructure without vendor lock-innot BlackLine

Where each one falls short

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

BlackLine

  • It sits on top of the ERP rather than replacing anything, so it is an additional annual platform cost against a general ledger you are already paying for, and the return has to come from reduced close effort and audit findings rather than from retiring another system.
  • The capability is split across separately licensed modules, so a reconciliation deployment that later needs journal entry, transaction matching and intercompany turns into three more commercial conversations rather than a configuration change.
  • Implementation runs for months and is normally partner led, because the value depends on how the account inventory, risk ratings, matching rules and ERP data feeds are configured, and a rushed configuration produces a system that certifies bad reconciliations on schedule.
  • The ERP data feeds have to be built and then maintained, so a chart of accounts change, an entity addition or an ERP upgrade turns into remediation work in BlackLine as well, and a broken feed stops the close rather than degrading it.
  • Licensing has a per user element and the close involves preparers, reviewers, controllers and auditors, so a finance function with many occasional reviewers pays for seats belonging to people who touch the system for a few days each month.

Lago

  • Free tier limited to 10,000 entities per month with 5M event cap
  • No specific pricing published for Pro annual plan or Scale plan
  • Self-hosted and on-premise deployments require engineering resources
  • Community support only on free tier
  • Scale plan requires annual contracts and sales engagement

Pricing, plan by plan

BlackLine

$29/month
  • EnterpriseFree
    • Custom pricing
    • Account reconciliation
    • Task management

Lago

Free
  • Build (Free)Free
    • 10,000 managed entities per month
    • 5M usage events per month
    • 1K events per second rate limit
  • Pro$399/month
    • 10,000 entities included (graduated pricing to 100K)
    • 25M usage events included (to 500M with graduated rates)
    • 10K events per second (upgradeable to 100K)
  • Scale$null/custom
    • Custom entity and event volumes
    • 50K events per second (upgradeable to 100K)
    • RBAC and SSO (SAML)

Which should you pick?

Choose BlackLine if

  • You need account reconciliation.
  • You also want risk based certification.
BlackLine review

Choose Lago if

  • You need real-time usage metering.
  • You want to start without paying.
  • You work on Web, Cloud, Self-hosted, On-premise, VPC.
  • You also want multiple pricing models.
Lago review

Questions people ask

Is BlackLine or Lago better?
Neither clearly leads. BlackLine starts at $29/month and Lago at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, BlackLine or Lago?
Lago has a free tier; the other does not. Paid plans start at $29/month for BlackLine and Free for Lago.
Does BlackLine or Lago run on more platforms?
BlackLine runs on Web. Lago runs on Web, Cloud, Self-hosted, On-premise, VPC.
Can I use Lago for free?
Yes. Lago has a free tier, so you can try it without paying. BlackLine starts at $29/month.
What is BlackLine best used for?
BlackLine is most often used for a listed company whose external auditors have raised findings about reconciliation evidence and reviewer sign off, a group with dozens of entities where the close depends on someone chasing spreadsheets by email every month, a finance team matching very high volumes of bank or payment processor transactions that no longer fit in a workbook, an organisation trying to shorten a close that runs past working day ten and cannot see where the time goes. Of those, a listed company whose external auditors have raised findings about reconciliation evidence and reviewer sign off and a group with dozens of entities where the close depends on someone chasing spreadsheets by email every month are not what Lago is typically brought in for.
What can BlackLine do that Lago cannot?
BlackLine covers Account reconciliation, Risk based certification, Journal entry management, Close task management. Lago covers Real-time usage metering, Multiple pricing models, Automated invoicing, Prepaid credits.

Answered from the vendors’ own pages

BlackLine: Does BlackLine replace our ERP or general ledger?

No. It reads from the ledger and writes approved journals back. You keep the ERP and pay for BlackLine on top of it.

Lago: Can I use Lago open-source for free?

Yes, Lago is open-source under the AGPLv3 license and can be self-hosted. The cloud-based Build plan is also free with limits of 10,000 entities and 5M events per month.

Source
BlackLine: At what size does it make sense?

The case is usually driven by control requirements and entity count rather than revenue. Companies under a control regime like Sarbanes Oxley, or groups with many entities and a long close, get the return. A single entity business with a short close will not.

Lago: What payment providers does Lago integrate with?

Lago integrates with Stripe and Adyen for payment processing. It is not a payment processor itself but orchestrates payments through these providers.

Source
BlackLine: How long does implementation take?

Months rather than weeks for the first module, longer for multi entity rollouts across several modules. The elapsed time is dominated by agreeing the account inventory and building the data feeds, not by installing software.

Lago: Does Lago support multiple currencies?

Yes, Lago supports multi-currency billing with automatic currency conversion for global businesses.

Source
BlackLine: Will it shorten our close on its own?

No. It makes the close visible and controlled, which is what exposes where the time goes. Shortening it still requires changing the underlying processes, and companies that skip that step get better documentation of the same slow close.

BlackLine: Can our auditors use it directly?

Yes, giving auditors read access to sample reconciliations and approvals is a common deployment pattern and one of the clearer sources of saved effort during the audit.

BlackLine: What happens if our chart of accounts changes?

The account inventory, risk ratings and feed mappings need updating to match. Treat any significant ERP or chart of accounts change as a BlackLine work package in the same project plan.

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