Why Acquirers Get PPA Wrong (and Pay for It for Years)

A roll-up closes on Friday; the PPA is “preliminary, subject to revision.” Three years later the auditors are still unwinding it: an unrecorded customer list that should have been amortizing, an earnout nobody remeasured, a measurement period that quietly expired with provisional numbers baked in permanently. Purchase price allocation is a day-one exercise with decade-long consequences — goodwill lives on the balance sheet, amortization runs through earnings, and impairment tests revisit every assumption annually.

This guide is the controller’s playbook for getting it right the first time: identifying what the target never recorded, computing the residual honestly, handling contingent consideration, and closing the measurement period on schedule.

Pair with Financial Statement Analysis, Goodwill Impairment Testing, Due Diligence Checklist, and ASC 718 Stock Compensation.

Step 1: Establish the Deal Economics (Before Touching Fair Value)

Lock down three inputs first — every downstream number depends on them:

  1. Total consideration transferred: cash paid, equity issued (valued at acquisition-date fair value, not the negotiated price), debt assumed-and-settled, and the acquisition-date fair value of any contingent consideration. Sum them; reconcile to the purchase agreement and bank/transfer records.
  2. The acquisition date: the date control transfers — usually closing, but watch deferred closings, staggered purchases, and regulatory approvals that shift it. Everything (valuation date, measurement-period clock, cutoff) keys off this single date.
  3. What was already owned: step acquisitions require remeasuring any pre-existing stake to fair value with the gain or loss in earnings. Document the valuation basis for that remeasurement explicitly.

Common day-one error: using the letter-of-intent price instead of the closing-date fair value of equity consideration. If your stock moved 30% between signing and close, the consideration moved with it — and so did goodwill.

Step 2: Hunt Unrecorded Intangibles (Where the Value Hides)

Targets rarely carry their most valuable assets on the balance sheet — internally developed intangibles are expensed as incurred under GAAP. The PPA must recognize every identifiable asset meeting the contractual-legal criterion (arises from contracts or legal rights) or separability criterion (capable of being sold, transferred, or licensed independently). The usual suspects in startup deals:

Intangible Recognition trigger Valuation approach
Developed technology / codebase Proprietary, in use or near-complete Relief-from-royalty or multi-period excess earnings
Customer relationships and lists At-will but sticky, trackable revenue Excess earnings (with contributory-asset charges)
Trade names and trademarks Brand value, registered or common-law Relief-from-royalty using market royalty rates
Non-compete agreements Key founders locked up With-and-without (income lost if they competed)
Favorable contracts and leases Below-market terms Differential cash flows over remaining term
In-process R&D Near-complete projects with value Replacement cost or excess earnings, then accounted for per ASC 350 rules

For each: document why it qualifies (which criterion), how it was valued (method, key inputs, source for each), and its useful life and amortization pattern. The valuation memo per asset is the workpaper auditors re-perform — “management estimate” without method is a finding. Engage an independent appraiser for material deals; self-built models survive only when the inputs are market-corroborated and the reviewer is genuinely independent.

Step 3: Compute Residual Goodwill (and Get the Private-Company Election Right)

Goodwill = total consideration − fair value of identifiable net assets. It is a residual — which means every dollar misallocated to (or from) identifiable assets lands in goodwill, distorting amortization and impairment for years. Sanity-check directionally: technology-heavy targets should show identifiable intangibles dominating; a goodwill number that dwarfs everything else usually means missed intangables, not a premium brand.

Then make the election decision deliberately:

  • Public companies: no amortization; annual impairment testing at the reporting-unit/CGU level — see Goodwill Testing.
  • Private companies: may elect the simplified alternative — amortize goodwill straight-line over ten years or less, test for impairment only on triggering events. Most acquisitive startups should take it: lower compliance cost, fewer surprise charges, and acquirers understand exactly what it means.

Document the election (or deliberate non-election) in the accounting policy memo before the first post-deal close. Reversing course later invites restatement questions nobody wants.

Step 4: Handle Contingent Consideration (Earnouts Done Right)

Earnouts are measured at fair value on acquisition day — not at the maximum payout, not at zero “to be conservative,” but at probability-weighted expected value discounted appropriately. Then classification decides everything after:

Classification Subsequent treatment Common trigger
Liability (cash-settled, variable-share, employment-linked nuances) Remeasure to fair value every period through earnings Earnout misses → gain; overperforms → loss
Equity (fixed shares for fixed outcome) Generally no remeasurement True fixed-share settlements only

The earnings volatility surprises founders: a missed earnout target creates a gain (liability written down), making a bad operating quarter look better. Explain this to the board before it happens, not in the quarter it does — and tie the remeasurement controls to your standard Month-End Close discipline, with independent review of the valuation inputs each period.

Probabilities must be supportable at inception and updated honestly: an earnout modeled at 80% achievement that pays zero three years running needs its assumption history examined, not just its final mark.

Step 5: Close the Measurement Period on Time

The measurement period runs up to one year from acquisition, and only for facts and circumstances that existed at acquisition but needed time to confirm (a pending appraisal, an unresolved tax position, a working-capital true-up mechanism). Rules that bite:

  • Adjustments go back to acquisition accounting (goodwill and comparatives), with disclosure of what changed and why — not through current-period earnings.
  • New information about post-acquisition conditions (a customer lost in month eight, a product discontinued) is a current-period event: impairment or disposal accounting, never a measurement-period tweak.
  • Track every provisional amount in a register with owner, expected resolution date, and status. Anything still “provisional” at month eleven gets escalated to the controller and auditor immediately — expired measurement periods fossilize errors permanently.

Calendar the one-year anniversary at deal close. When it passes, lock the PPA, archive the full binder (agreements, valuations, memos, reviewer sign-offs), and shift to the ongoing regime: amortization schedules, impairment indicators each quarter, earnout remeasurements each period.

Common Findings (Fix Before the Auditor Does)

Finding Prevention
Material customer relationships left in goodwill Intangible identification checklist signed per deal, reviewed by someone who has seen purchase accounting before
Earnout never remeasured after day one Recurring close task with owner and valuation support each period
Measurement-period adjustments booked as current-period corrections (or vice versa) Classification memo per adjustment: existed-at-acquisition vs arose-after
Private-company amortization election never formally made Policy memo at first post-deal close; disclose the election
No audit trail from purchase agreement to journal Single PPA binder: agreement → consideration proof → valuations → entries → disclosures, all cross-referenced

FAQ

Do asset deals differ from stock deals for PPA purposes?

The accounting follows the same acquisition method, but tax consequences diverge sharply (step-up availability, deal structure). Coordinate the PPA with tax structuring before close — post-close elections rarely replicate pre-close planning. See Year-End Tax Planning.

When is pushdown accounting relevant?

When the acquiree issues separate financial statements, pushdown (recording the acquirer’s basis, including goodwill) may apply or be elected. Decide at acquisition with auditor input — it changes every subsequent impairment test for that entity.

Next Steps

  1. Before the next LOI is signed, freeze your PPA template: consideration checklist, intangible identification questionnaire, valuation policy, and measurement-period tracker.
  2. Engage the appraiser at term-sheet stage, not post-close — day-one fair values need day-one data, and reconstruction costs multiples of contemporaneous work.
  3. Calendar the measurement-period end date the day the deal closes, with quarterly status reviews until every provisional amount is resolved or the window shuts.