FP&A & Financial Modeling3 min readUpdated September 2026

Cube vs. Mosaic for a PE Portfolio Company's Board Reporting

Cube vs Mosaic for a lower-middle-market portfolio company depends on how standardized the sponsor's reporting package is. Sponsors want EBITDA with labeled add-backs, covenant compliance against the debt facility, and a variance walk against the deal model, delivered on a fixed monthly or quarterly schedule regardless of what else is happening in the business.

Here's how to decide between Cube and Mosaic once sponsor reporting is a real, recurring obligation rather than an occasional ask.

Vendors Covered in this Article

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Decide based on how standardized your sponsor's reporting template is

Most PE sponsors have a specific reporting template, sometimes a spreadsheet they've used across their whole portfolio, that the portfolio company is expected to fill in on a fixed schedule. If that template is itself a spreadsheet, Cube's approach of building your model to feed that exact template directly can save real time versus manually re-keying numbers every reporting period.

If the sponsor is more flexible about format and mainly wants a consistent set of metrics delivered reliably, a dashboard-based tool has more room to add value beyond just filling in a fixed template. Ask the sponsor's own portfolio operations team directly what format they actually prefer before assuming either answer, since some sponsors have a strong opinion here and others genuinely don't mind as long as the numbers are accurate and arrive reliably on schedule.

Decide based on how debt covenants are calculated

Covenant calculations, debt-to-EBITDA ratios, fixed charge coverage, often have specific definitions negotiated into the credit agreement that don't match a standard EBITDA calculation off the shelf. Whichever tool you use needs to carry the exact covenant definition from your specific credit agreement, not a generic debt ratio, since a mismatch here isn't just an inconvenience, it can create a false covenant breach or false comfort depending on which direction the calculation is off.

Get your credit agreement's precise covenant language in front of whoever configures the model before the first reporting period runs, rather than discovering a definitional gap the month a covenant is actually close to being tested.

Check each covenant calculation against these points:

  • Pull the exact covenant definitions from your credit agreement instead of using a generic EBITDA or debt ratio.
  • Confirm the tool can carry your negotiated add-back definitions exactly as written.
  • Test debt-to-EBITDA and fixed charge coverage in the model against a period you have already reported to the lender.
  • Check covenants at least as often as the agreement requires, and consider checking more often to catch a potential breach early.
  • Make sure every reported number can be traced back to its source, since the sponsor's team may want to audit it.

Cube for a CFO who already builds the sponsor package in Excel

If your finance team already builds the EBITDA bridge, add-backs, and covenant calculation in a spreadsheet that ties out correctly, Cube's approach of syncing that model against your accounting data keeps the logic exactly where it's understood and auditable, which matters when a sponsor's own team may want to trace a number back to its source.

This auditability is worth real weight at a PE-backed company, since a sponsor's deal team or a lender's credit team reviewing your numbers will often ask to see exactly how a figure was derived, and a transparent spreadsheet formula is easier to walk someone through than a black-box dashboard calculation.

Mosaic for a dashboard the sponsor's team can access directly

Some sponsors prefer a live dashboard they can check between formal reporting periods rather than waiting for a monthly package; if that's your sponsor's preference, Mosaic's dashboard-first approach may fit better. Confirm in a demo that it can carry your specific EBITDA add-back definitions and covenant calculations exactly as negotiated, not a generic template, since sponsors and lenders will notice a discrepancy quickly.

Ask your sponsor directly whether they'd actually use self-serve dashboard access or whether they prefer receiving a formal package on schedule, since building for a preference the sponsor doesn't actually have is wasted effort either way.

Building the deal-model variance walk into the forecast

Sponsors typically want to see actual results against the original deal model's projections, not just against a rolling internal budget, since the deal model is what they underwrote the investment against. Keep the original deal model as a fixed reference point in your forecasting tool, separate from your current operating budget, so a variance walk can show both how you're doing against this year's plan and how the investment thesis is tracking against what was originally underwritten at close.

Where Jirav fits a portco planning an add-on acquisition

Jirav's driver-based modeling is useful when a portco is evaluating an add-on acquisition and needs to model the combined entity's headcount, cost structure, and integration timeline, since a sponsor evaluating an add-on will want to see realistic integration assumptions, not just the acquired company's standalone numbers layered on top.

A driver-based model also makes it easier to show the sponsor a range of integration scenarios, faster versus slower headcount consolidation, for instance, rather than presenting a single fixed outcome that leaves no room for the deal team's own questions about timing and risk.

Executive Capability Standard

What Good Looks Like

A well-run portfolio company can produce sponsor-ready EBITDA, covenant, and variance-walk reporting on schedule every period, with add-back and covenant definitions that tie exactly to the credit agreement and reporting standards actually in place.

Building The Capability (5-Stage Skill Ladder)

1. Learn:Learn your sponsor's exact reporting template and your credit agreement's specific covenant definitions before building anything, rather than assuming a generic EBITDA calculation is close enough.
2. Do Manually:Build a spreadsheet that calculates EBITDA, add-backs, and covenants exactly as defined in your agreements, and produce the sponsor package by hand for two reporting periods.
3. Delegate:Assign a controller or FP&A lead to own the monthly sponsor package and flag any trend that could affect covenant compliance before it becomes urgent.
4. Automate:Sync accounting data into Cube or Mosaic so the EBITDA bridge, covenant calculation, and variance walk update without manual re-keying each reporting period.
5. Buy:Standardize reporting so the sponsor package generates directly from the same platform used for internal management reporting, with no separate manual reconciliation step.

How to Get Started

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Frequently Asked Questions

Do Cube or Mosaic calculate EBITDA add-backs automatically?

No, add-back definitions come from your specific credit agreement or sponsor's reporting standards, which vary by deal. Both tools can carry that calculation once it's defined, but the definition itself has to be set up to match your actual agreement, not a generic formula.

How often does a covenant calculation need to be checked against actual results?

Check it at least as often as the credit agreement requires, usually monthly or quarterly. Many CFOs at PE-backed companies check more frequently, so a potential breach surfaces early enough to talk with the lender before it becomes a formal issue. Frequent checks also show the sponsor the numbers are being tracked closely.

Should the deal model be updated as the business changes, or kept as a fixed baseline?

Keep the original deal model fixed as a reference point for measuring the investment thesis, and build a separate, regularly updated operating budget for internal management. Sponsors generally want to see performance against both what was originally underwritten and the current operating plan, and conflating the two makes it hard to tell whether a variance reflects the thesis playing out differently or just a normal budget miss.

About the numbers

This guide doesn't quote a sourced benchmark. Figures in it are estimates or general guidance, so check them against your own numbers.

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