Why FIFO Matters for Crypto Taxes

When calculating capital gains on cryptocurrency, one of the most important decisions is which cost basis method to use. Among the available options, First-In-First-Out (FIFO) is one of the most common and widely accepted approaches by tax authorities around the world.

FIFO assumes that the first coins you purchased are the first ones you sell. This method creates a clear, chronological trail that matches the natural flow of most investors who buy and hold over time.

How FIFO Works in Practice

Imagine you bought 1 BTC at forty thousand dollars in early 2024, then another 1 BTC at sixty thousand dollars later that year. If you sell 1 BTC when the price reaches seventy thousand dollars, FIFO matches the sale to your earliest purchase—the one at forty thousand dollars. Your taxable gain is therefore thirty thousand dollars.

Advantages of FIFO

It is simple and straightforward to implement and audit. Most tax agencies default to FIFO when no method is specified, creating a predictable paper trail based on acquisition order.

When FIFO May Not Be Ideal

  • In some jurisdictions, alternative methods like LIFO or Specific Identification are permitted.
  • LIFO can reduce taxable gains in bull markets by matching sales to higher-cost recent purchases.
  • However, not all countries allow these alternatives, and switching methods requires consistency and documentation.

For most individual investors, especially those with straightforward buy-and-hold patterns, FIFO remains the safest and most practical choice.

Using the correct cost basis method directly affects your reported gains and tax liability. Accurate FIFO application ensures compliance and peace of mind.

FIFO is not the only method, but its clarity and broad acceptance make it a strong default for crypto tax reporting.