Contract Modifications Under ASC 606-10-25-12 and 25-13: Separate Contract, Termination, or Catch-Up?
Change orders, upsells, scope additions, renegotiated prices — contracts rarely stay the shape they were signed in. ASC 606 routes every modification through a two-question decision tree in paragraphs 606-10-25-12 and 25-13, and the three possible exits produce very different revenue. Most errors come from answering the two questions carelessly, so let's take them slowly, then run the numbers on all three outcomes.
First: is it a modification at all?
A contract modification exists when the parties approve a change in the scope or price (or both) of an existing contract — and approval can be written, oral, or implied by customary practice (ASC 606-10-25-10). Unpriced change orders can still be modifications if scope is approved and price is enforceable-in-principle; the entity estimates the price change under variable-consideration guidance.
The two questions
Question 1 (scope): does the modification add promised goods or services that are distinct from those already transferred?
Question 2 (price): does the contract price increase by an amount reflecting the standalone selling price of the added goods or services — allowing "appropriate adjustments" for circumstances, like a discount reflecting selling costs the entity avoids on an existing customer?
The routing (ASC 606-10-25-12 and 25-13):
| Distinct additions? | Priced at SSP? | Treatment |
|---|---|---|
| Yes | Yes | Separate contract (25-12) — the old contract is untouched |
| Yes | No | Termination + new contract (25-13(a)) — prospective, blended price |
| No (single partially satisfied obligation) | — | Cumulative catch-up (25-13(b)) — adjust revenue now |
Outcome 1 — separate contract
Baseline: an entity promises 100 units at $10 each ($1,000 total); each unit is distinct and recognized on delivery. After 40 units ($400 recognized), the customer orders 20 more at $9.50 each, which is the standalone selling price at that date.
Both answers are yes: distinct goods, priced at SSP. The modification is a stand-alone new contract. The original 60 undelivered units keep earning $10.00 each; the 20 new units earn $9.50 each as delivered. Nothing already recognized moves, and the two contracts never blend.
Outcome 2 — termination and new contract (the blended price)
Same baseline, but the 20 extra units are negotiated at $7.00 — a price well below SSP, given purely as commercial goodwill. Distinct goods, not at SSP → ASC 606-10-25-13(a): treat the original contract as terminated and a new contract created covering everything not yet delivered.
The consideration to allocate forward is what's left of the old contract plus the new money:
- Undelivered original units: 60 × $10 = $600
- New units: 20 × $7 = $140
- Total $740 across 80 remaining units = $9.25 per unit, prospectively.
The $400 already recognized on the first 40 units stays exactly where it is — this route never restates the past, it only re-prices the future. From here, every delivered unit (old promise or new) earns $9.25.
Outcome 3 — cumulative catch-up
Now a construction contract: one performance obligation (an integrated building), transaction price $1,000,000, expected cost $750,000, progress measured cost-to-cost. With $300,000 of cost incurred, progress is 40% and recognized revenue is $400,000.
The customer approves a design change: price rises $300,000 (new total $1,300,000) and estimated total cost rises to $900,000. The added work is not distinct — it folds into the same partially satisfied obligation — so ASC 606-10-25-13(b) applies: update the transaction price and the measure of progress for the combined contract, and adjust revenue now:
- Revised progress: $300,000 ÷ $900,000 = 33⅓%
- Revenue that should be recognized to date: 33⅓% × $1,300,000 = $433,333
- Cumulative catch-up at the modification date: $433,333 − $400,000 = +$33,333 of revenue.
Catch-ups swing both ways: if the added scope had raised costs faster than price, the recalculation would have reduced revenue at the modification date. This is the only route that touches previously recognized amounts.
Where candidates and preparers go wrong
- Testing "distinct" against the wrong pool. The additions must be distinct from goods and services already transferred — remaining undelivered units count as part of what the new goods can be distinct from.
- Forgetting the "appropriate adjustments" escape hatch. A modest discount versus list can still be "at SSP" if it reflects real economics (no selling costs for an existing customer). Judgment, documented, decides it.
- Blending when the answer was "separate." A separate contract keeps two prices running side by side — resist the urge to average.
- A price-only concession is still a modification — with no distinct additions, it lands in catch-up (or prospective) territory, not separate-contract territory.
Run the decision tree on exam-style facts: the ASC 606 revenue question bank includes modification scenarios for every branch, each with a sourced explanation.
This page is educational material for exam practice and general understanding, not professional accounting advice — engage a qualified accountant for real transactions.
Source: FASB Accounting Standards Codification, ASC 606-10-25-10 through 25-13 (Contract Modifications).