Every searcher hits the same fork after signing a letter of intent: pay a firm $15,000 to $50,000 for a full quality of earnings engagement, or open Excel and do it yourself. Both paths have wrecked deals. Here is an honest accounting of the tradeoffs.
What DIY actually gets right
Nobody will ever care about your deal like you do. Doing your own diligence forces you to understand the business at the account level: which customers drive revenue, what the owner really pays themselves, how cash moves through the year. Searchers who outsource everything sometimes close on a business they have never truly examined. The learning is real and it compounds after close.
Where DIY quietly fails
The failure mode is not laziness. It is that certain analyses are easy to get subtly wrong and expensive to get wrong at all:
- Cash versus accrual distortions. Small-business books mix bases freely. Revenue that looks smooth on a cash basis can hide collapsing bookings, and vice versa.
- Aggressive add-backs. Sellers and brokers present add-back schedules that maximize adjusted EBITDA. Without tracing each one to source entries, you are negotiating price off the seller's homework.
- Working capital surprises. Skipping the net working capital analysis means discovering at close that the peg negotiation is happening without you.
- No proof of cash. The single highest-value test in small-deal diligence, tying reported revenue to bank deposits, is tedious by hand, so DIY buyers routinely skip it. See proof of cash.
What a firm gets right, and what you are overpaying for
A good QoE firm brings judgment: pattern recognition across hundreds of deals, credibility with lenders and investors, and support when findings turn into a price re-trade. What you are overpaying for is everything else. The majority of a traditional engagement's hours go to mechanical work: normalizing statements, building schedules, computing ratios. Senior-accountant rates applied to spreadsheet assembly.
The middle path
The setup we think is right for most searcher-scale deals: let software do the mechanical layer, keep your own eyes on the output, and buy human review only where judgment matters. Zenith generates the full 40-tab workbook, EBITDA bridge with auto-detected add-backs, flag log, and NWC analysis directly from the target's accounting system, priced per report. You review every flag yourself, which is the DIY learning benefit without the DIY error rate. When the deal goes under LOI and your lender wants reviewed work product, the reviewed tier adds a line-by-line analyst review and a lender-ready summary letter.
That keeps your total diligence spend under $2,500 on a deal where the traditional path costs ten times that, without skipping the tests that actually kill bad deals.
