Complex GAAP and IFRS questions, answered in writing
Technical accounting and IFRS advisory for US companies
Finbryn provides technical accounting and IFRS advisory for US companies facing a one-off transaction: a written ASC or IFRS analysis, calculation schedules and draft disclosures that management reviews and adopts. Checked 2026-10-16: ASU 2023-09 income tax disclosures start for private companies with annual periods beginning after December 15, 2025, so calendar-year 2026 statements.
Management report
Illustrative client · September 2026
USD
| Line | Sep | Aug | |
|---|---|---|---|
| Revenue | 142,380 | 131,904 | +10,476 |
| Cost of sales | (51,260) | (48,115) | (3,145) |
| Gross profit | 91,120 | 83,789 | +7,331 |
| Payroll | (46,300) | (45,900) | (400) |
| SoftwareNoted | (6,480) | (5,490) | (990) |
| Rent | (8,000) | (8,000) | 0 |
| Other operating | (9,215) | (9,870) | +655 |
| Net income | 21,125 | 14,529 | +6,596 |
Reviewer's note
Software is up on last month after two seats were added mid-month. Revenue includes one milestone invoice that will not repeat next month.
Illustrative. An example of the document, not a client's figures.
Technical accounting is the work a monthly close doesn't cover. Your bookkeeper records what happened. Technical accounting decides how a one-off event should be recorded under US GAAP or IFRS, writes the reasoning down and builds the schedules behind it. Think of the SAFE that converts in a priced round, the acquisition that closed in March, the option grant to a new head of engineering, or the goodwill nobody has tested since the deal.
Who this is for
A controller or CFO at a private, venture-backed or PE-backed company with no technical accounting team. Or the finance lead of a US subsidiary whose foreign parent reports under IFRS. The auditor sends a request list, and one line says "provide management's accounting analysis for" some transaction. That line is where this hub starts.
What Finbryn prepares
Finbryn prepares the analysis, schedules and draft disclosures for management to review and adopt. Management owns the conclusion and the company's auditor decides whether it is acceptable. Finbryn issues no audit, review or attest report and no valuation opinion.
- Stock compensation under ASC 718 and IFRS 2: options, RSUs and profits interests.
- Purchase accounting under ASC 805 and IFRS 3: the allocation after a closed deal.
- Goodwill and asset impairment under ASC 350, ASC 360 and IAS 36: annual and triggering-event tests.
- Convertible notes, SAFEs and warrants: classification, conversion and fair value.
- Accounting position papers and technical memos: the written analysis your auditor asks for.
- IFRS 18 adoption support: the new income statement structure from 1 January 2027.
- Capitalized software under ASC 350-40: including the ASU 2025-06 changes.
The diagram below routes seven common situations, from an option grant to an auditor's request for a memo, to the page that covers each.
Related in the close hub
Recurring standards stay with the monthly close: revenue recognition under ASC 606 and IFRS 15, lease accounting under ASC 842 and IFRS 16, commission accounting under ASC 340-40, US GAAP conversion, IFRS conversion, IFRS reporting packs for US subsidiaries and crypto fair value accounting under ASU 2023-08.
Credit loss models, hedge accounting and fair value support sit in their own hub: credit loss, derivatives and fair value. Accounting firms that need technical accounting capacity can use white-label technical accounting support.
Two guides to start with
The US GAAP vs IFRS guide sets the two frameworks side by side. The effective-date table for new US GAAP standards shows which Updates reach your year-end.
How an engagement runs
You send the contracts, board minutes, cap table or valuation report the question rests on. Finbryn writes the issue, the facts, the guidance considered and the conclusion, then the schedules and draft entries. Your controller edits and adopts the memo, and the auditor tests it. Fees are scoped per engagement; see how we price.
All services
Technical accounting and IFRS advisory for US companies: every service
- Stock compensation accounting under ASC 718 and IFRS 2Option, RSU and profits interest expense calculated from the fair value inputs the company supplies, with vesting schedules, journal entries and draft disclosures under ASC 718 and IFRS 2.
- Purchase accounting and purchase price allocation under ASC 805 and IFRS 3Acquisition accounting for a closed deal: the purchase price allocation schedule, opening balance sheet entries and draft disclosures, built on fair values from management or its valuation specialist.
- Goodwill and long-lived asset impairment testing under ASC 350, ASC 360 and IAS 36Annual and triggering-event impairment testing support: reporting unit carrying amounts, forecast-based models, comparison tables and draft disclosures for management and the auditor to review.
- Accounting for convertible notes, SAFEs and warrantsClassification memos, conversion schedules and journal entries for convertible notes, SAFEs and warrants, with embedded features valued from inputs that management or its valuation specialist supplies.
- Accounting position papers and technical memosWritten ASC and IFRS analysis for the transaction your auditor asked about: facts, guidance considered, conclusion, journal entries and draft disclosures, for management to review and adopt.
- IFRS 18 adoption support for US subsidiaries and IFRS reportersA gap assessment against IAS 1, recast comparative statements of profit or loss and a draft management-defined performance measures note ahead of the 1 January 2027 effective date.
- Capitalized software development costs under ASC 350-40 and ASU 2025-06A software capitalization policy, project-level cost schedules, amortization and impairment tracking, and a transition plan for ASU 2025-06, built from your engineering time and contractor records.
- SEC reporting support for smaller reporting companiesFinancial statement drafts, tie-outs, roll-forwards and disclosure checklists behind the 10-K, 10-Q and 8-K your company files.
Selected engagements
Related engagements
Questions
Frequently asked questions: Technical accounting and IFRS advisory for US companies
Can I outsource technical accounting memos for ASC 718, ASC 805 or convertible notes?
Yes. Finbryn prepares the memo, schedules and draft disclosures, and management reviews and adopts them. The auditor still tests the conclusion. SAS 143 covers audits of periods ending on or after December 15, 2023 (GAO summary, checked 2026-10-16), including indicators of management bias, so the memo documents its inputs. See accounting position papers.
What is technical accounting and how is it different from bookkeeping?
Bookkeeping records transactions in the ledger. Technical accounting decides how an unusual transaction applies to a standard and documents why. FASB's ASU 2024-01 (March 2024) shows the gap: a bookkeeper enters the grant of a profits interest, while a technical memo decides whether ASC 718 applies to it at all, using four worked fact patterns in the Update.
Who prepares IFRS reporting for the US subsidiary of a foreign parent?
The subsidiary's controller owns it, and Finbryn prepares the working layer: the US GAAP to IFRS bridge and the parent's template. See IFRS reporting packs for US subsidiaries. IFRS 18 replaces IAS 1 for annual periods beginning on or after 1 January 2027 (ifrs.org, checked 2026-10-16), which is why the IFRS 18 adoption page matters for 2026 comparatives.
Does my auditor have to accept a memo written by an outside provider?
The auditor decides what evidence is enough. For SEC filers, 17 CFR 210.2-01(c)(4) (eCFR, checked 2026-10-16) bars the auditor from preparing the financial statements or their source data, so a filer's memo comes from its own staff or someone other than its auditor. A private company follows the AICPA's nonattest rules; ask your auditor.
Do you provide valuations or fairness opinions?
Finbryn issues no fairness opinion, 409A valuation or valuation opinion. Business, share and intangible values come from management or its valuation specialist. Warrant, swap and bifurcated feature fair values for reporting are a separate engagement under derivative valuation for financial reporting. Under ASU 2021-07 (October 2021) a 409A-style valuation can support the option share price input.
How is technical accounting work priced?
Scoped per engagement. A memo on one SAFE is a smaller job than an acquisition with several intangible classes, so the quote follows the number of instruments, contracts or entities and the state of your records. Finbryn confirms the fee in writing before work starts, in a dated scope sheet naming the standards. See how we price.
Sources
- [1]FASB, ASU 2024-01: Scope Application of Profits Interest and Similar Awards (ASC 718), checked October 16, 2026
- [2]FASB, ASU 2025-06: Targeted Improvements to the Accounting for Internal-Use Software (ASC 350-40), checked October 16, 2026
- [3]FASB, ASU 2020-06: Debt with Conversion and Other Options and Derivatives and Hedging, Contracts in Entity's Own Equity, checked October 16, 2026
- [4]IFRS Foundation, IFRS 18 Presentation and Disclosure in Financial Statements, checked October 16, 2026
- [5]IFRS Foundation, IAS 36 Impairment of Assets, checked October 16, 2026
Next step
Talk to the team that would run your books
A short call covers your setup, your software and what a first month would look like. You get a written scope and price after it.