UTXO Consolidation Calculator

What is UTXO Consolidation?

UTXO consolidation is the process of combining multiple small Bitcoin outputs (UTXOs) into a single larger one. Every time you receive Bitcoin, a new UTXO is created. Over time, your wallet accumulates many small UTXOs that each cost fees to spend individually.

By consolidating during low-fee periods, you can reduce future transaction costs when fees are higher. Think of it like exchanging a jar of coins for paper bills: you pay a small fee now to avoid larger costs later.

When Should You Consolidate?

Consolidation makes sense when current fees are significantly lower than expected future fees. The break-even analysis in the calculator above shows exactly when consolidation becomes profitable.

Good times to consolidate:

• Weekend and off-peak hours when mempool congestion is low
• During extended low-fee periods (economy fees under 5 sat/vB)
• When you have many small UTXOs from regular DCA purchases
• Before anticipated network congestion events

How the Calculator Works

The calculator compares two scenarios: consolidating all UTXOs now into one output, versus spending each UTXO individually in the future. It factors in:

• Current fee rates from the Bitcoin mempool
• Your expected future spending fee rate
• The number of UTXOs you want to consolidate
• Your address type (which determines input/output sizes)

Frequently Asked Questions

What is a UTXO?

UTXO stands for Unspent Transaction Output. It's the fundamental unit of Bitcoin: when someone sends you Bitcoin, it creates a UTXO that only you can spend. Your wallet balance is the sum of all your UTXOs.

How many UTXOs do I have?

Check your wallet software: most wallets show a UTXO list or coin control screen. If you receive Bitcoin regularly (through DCA, mining, or payments), you likely have many UTXOs.

Is consolidation bad for privacy?

Yes, consolidation links all your UTXOs together in a single transaction, revealing that they belong to the same entity. If privacy is important, consider consolidating only UTXOs that are already linked, or use privacy-enhancing techniques.

What address type should I use?

Native SegWit (bc1q...) is the most common and offers good fee efficiency. Taproot (bc1p...) has the smallest input size. If you're unsure, check your wallet's receiving address format.

Can consolidation lose money?

Yes, if future fees end up lower than current fees, you would have been better off waiting. The break-even analysis helps you make an informed decision based on your fee expectations.