On December 15, 2025, a critical deadline passed for non-public entities holding cryptocurrency assets. The Financial Accounting Standards Board’s new mark-to-market accounting rules, which require businesses to value their digital assets at fair market value on their balance sheets, became effective for reporting periods beginning after this date. For companies holding Bitcoin at approximately $86,420 or Ethereum at $2,964, this accounting change fundamentally transforms how crypto assets appear on financial statements.
The Objective
The objective of mark-to-market accounting for cryptocurrency is straightforward: balance sheets must reflect the current fair value of digital assets rather than their historical purchase price. Previously, companies treated cryptocurrency as an intangible asset, meaning they could only write down its value if the price dropped but could not recognize gains until they sold. This created a distorted picture where a company holding Bitcoin purchased at $30,000 still showed it at $30,000 on its balance sheet even when Bitcoin traded at $86,420.
The new ASU 2023-08 standard, issued by FASB, eliminates this asymmetry by requiring entities to measure certain crypto assets at fair value with changes recognized in net income each reporting period. This guide walks through the implementation process step by step.
Prerequisites
Before implementing mark-to-market accounting, ensure your organization meets these prerequisites. First, you need a reliable pricing data source for each cryptocurrency you hold. CoinMarketCap historical snapshots, exchange API feeds, or institutional pricing services like CoinDesk Indices provide the reference prices needed for fair value measurements.
Second, you need a chart of accounts structure that can accommodate unrealized gains and losses. Most accounting systems require a new equity section or contra-asset account to track fair value adjustments separately from the cost basis of the original investment.
Third, you need clear documentation of your entity classification. Public business entities were required to adopt these rules for fiscal years beginning after December 15, 2024. Non-public entities, including most private companies and LLCs, must adopt for annual reporting periods beginning after December 15, 2025. Early adoption was permitted, so some entities may already be compliant.
Step-by-Step Walkthrough
Step one is to inventory all cryptocurrency holdings across every wallet, exchange, and custodian your organization uses. This includes cold storage wallets, hot wallets on exchanges, staking positions, and locked tokens. Each position must be documented with its acquisition date, cost basis, and current custodian.
Step two is to establish the fair value measurement process. For each reporting date, capture the closing price of each cryptocurrency from your designated pricing source. For Bitcoin on December 15, 2025, the CoinMarketCap closing price was $86,419.78. Multiply the per-unit price by the number of units held to calculate total fair value.
Step three is to calculate the fair value adjustment. Subtract the aggregate cost basis from the aggregate fair value to determine the unrealized gain or loss. If your company holds 10 BTC purchased at an average cost of $45,000, the cost basis is $450,000. At the December 15 price of $86,420, the fair value is $864,200. The unrealized gain of $414,200 must be recognized in net income for the current period.
Step four is to create the journal entries. Debit the cryptocurrency asset account for the fair value increase and credit a fair value adjustment account in other comprehensive income or directly to earnings, depending on your entity’s reporting framework. For decreases in value, the entries reverse: credit the asset account and debit the loss account.
Step five is to establish recurring processes. Because cryptocurrency prices change daily but reporting periods are typically monthly or quarterly, you must implement a systematic approach to capturing prices at each period end. Automated tools that pull pricing data from APIs and generate preliminary journal entries can significantly reduce the manual workload.
Troubleshooting
Several common implementation challenges arise in practice. First, pricing discrepancies between exchanges can create confusion about which price to use for fair value measurement. The FASB guidance does not mandate a specific pricing source, but consistency is essential. Choose one source and document it in your accounting policies.
Second, tokens that trade on only one exchange or have very low liquidity present fair value measurement challenges. The guidance applies to crypto assets that meet specific criteria, including being traded on active exchanges. If a token does not have an active market, different fair value measurement techniques may be required.
Third, tax implications differ from accounting treatment. Recognizing unrealized gains for accounting purposes does not necessarily trigger taxable events. Companies must maintain separate tracking for book and tax purposes, potentially creating temporary differences that require deferred tax accounting.
Mastering the Skill
Advanced practitioners should explore several areas beyond basic implementation. Hedging strategies that lock in gains without triggering taxable events can be coordinated with the mark-to-market accounting cycle. For entities with significant crypto holdings, the quarterly volatility in reported earnings caused by price fluctuations may require communication strategies with stakeholders who are unfamiliar with the new reporting methodology.
Integration with existing ERP systems through API connections to crypto pricing services enables real-time fair value monitoring between reporting periods. Tools like CoinTracker, Bitwave, and Lukka provide specialized crypto accounting software that automates much of the fair value measurement and journal entry process.
As more institutions adopt tokenized assets like JPMorgan’s MONY fund launched on the same day, the volume and variety of crypto-related accounting entries will only increase. Mastering mark-to-market crypto accounting now positions financial professionals for the growing intersection of digital assets and corporate finance.
Disclaimer: This article is for educational purposes only and does not constitute tax or accounting advice. Always consult with qualified professionals for guidance specific to your entity’s circumstances.
The gap between crypto and TradFi is narrowing fast
This is exactly the kind of development the space needs
Interesting perspective — I hadn’t considered that angle before
Every cycle the infrastructure gets more robust
ASU 2023-08 finally lets companies recognize unrealized gains. MicroStrategy must be loving this change. their BTC holdings look way better on the balance sheet now
MicroStrategy carrying BTC at cost while it mooned was always absurd. ASU 2023-08 fixes the most obvious accounting gap in corporate crypto
the accounting change is huge for corporate treasury adoption. showing BTC at cost while it moons made no sense. fair value measurement is how real assets are reported