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The Acquisition Playbook / Diligence / 3.1

Quality of earnings and add-back validation

You signed the LOI based on implied EBITDA you built from limited information. Now you need to prove it. Earnings quality is the first and most important diligence workstream because every other number in the deal inherits from it. If your EBITDA is wrong by 20%, your price is wrong, your structure is wrong, and your return is wrong.

Key terms for this section

Quality of earnings (QoE)

The process of independently recreating the seller's EBITDA from source documents - the general ledger, bank statements, and tax returns - to confirm it is real, sustainable, and accurately represents future cash generation.

Add-back

An expense the seller adds back to reported profit to show higher underlying earnings. Add-backs are legitimate when documented and truly non-recurring. They are not legitimate when vague, recurring, or unsupported.

The 50% rule

For undocumented add-backs: give 50% credit, not 100%. If a seller claims $100K in personal car expenses but has no documentation, assume $50K is legitimate and reject $50K. Conservative enough to protect you, fair enough to avoid a fight.

Normalized EBITDA

EBITDA after removing documented non-recurring items and adding back missing expenses that will hit you post-close. This is the number your price should be based on.

Missing expenses

Real operating costs that are not on the current books but will appear after close: market-rate salary to replace what the owner was doing, health insurance not in the P&L, deferred maintenance, professional fees.

Section takeaway

EBITDA is the foundation everything else rests on

Every other number in the deal - price, structure, earnout targets, return projections - inherits from your normalized EBITDA. Getting this wrong by 15% and not catching it until close is the most common and most expensive mistake in lower middle market acquisitions.

DiligenceWorking capital and cash conversionAll modules

This course is operational guidance, not investment, legal, tax, or financial advice. SilverShore Partners is not a registered broker-dealer or investment adviser; in qualifying private-company transactions we may operate within the federal M&A broker exemption under Section 15(b)(13) of the Securities Exchange Act. Confirm specifics with your own advisors.