Bitcoin concentration limits set the maximum a company may hold in Bitcoin, and the maximum it may hold with any single custodian or counterparty. The right number comes from working backwards from the loss the company can absorb, not from what other companies have done. Once set, the limits belong in the Bitcoin treasury policy with a clear measurement basis and a breach process.
The three kinds of concentration
When finance teams talk about concentration, they usually mean three separate things.
- Asset concentration. How much of the treasury, or of net assets, is in Bitcoin.
- Counterparty concentration. How much is exposed to a single liquidity provider during and after a trade.
- Custody concentration. How much is held with one custodian, or under one set of keys.
Each needs its own limit. A company can be well within its asset limit and still have every coin with one provider, which is a different and avoidable risk.
Setting Bitcoin concentration limits for the asset itself
There are three common ways to set the overall ceiling. Many companies use more than one and take the lowest result.
1. Loss tolerance. Ask the board what loss in a single year the company could absorb without affecting operations, dividends or covenants. Divide that by an extreme drawdown assumption. If the tolerable loss is 4 units and the stress assumption is an 80% fall, the ceiling is 5 units.
2. Surplus cash. Identify cash that is genuinely surplus to operating needs, capital spending and a safety buffer over a set horizon. Cap Bitcoin at a share of that surplus, never the operating balance.
3. Share of treasury or net assets. A simple percentage cap. Easy to understand and monitor, but it should be checked against the first two methods so it is not arbitrary.
The table below shows how the loss-tolerance method works. All figures are illustrative.
| Illustrative tolerable loss | Stress assumption | Implied maximum holding |
|---|---|---|
| 2 units | -80% | 2.5 units |
| 4 units | -80% | 5 units |
| 4 units | -50% | 8 units |
| 10 units | -80% | 12.5 units |
The stress assumption drives the answer. A board that is uncomfortable with the higher figures is telling you to use a harsher assumption. Our article on how much Bitcoin a company should hold covers sizing in more depth.
Cash floors: the limit that matters most
A concentration limit on Bitcoin is only half the picture. The other half is a floor on cash and cash equivalents that cannot be used to buy Bitcoin.
Typical forms:
- a minimum number of months of operating expenses;
- a minimum cash balance tied to debt service or covenants;
- a rule that Bitcoin is never counted towards liquidity tests.
Set the cash floor first and the Bitcoin limit second. Boards find it easier to agree how much must stay safe than how much can be put at risk.
Counterparty and custody caps
Counterparty exposure during a trade is often short but can be large. Limit it by:
- capping the amount pre-funded with any one liquidity provider;
- using settlement methods that shorten the time between payment and delivery;
- moving purchased Bitcoin to the company's own custody arrangement promptly.
For custody, consider:
- a maximum share of holdings with any one custodian;
- splitting holdings between a primary and secondary arrangement once they pass a certain size;
- separate limits for operational wallets used for frequent transfers versus long-term storage.
See settlement and counterparty risk and corporate Bitcoin custody for the detail behind these choices.
Measurement basis and monitoring
A limit is only enforceable if everyone measures it the same way. The policy should state:
- Basis. Cost, month-end fair value, or both. Using cost means a rising price does not trigger a breach; using fair value means it might.
- Frequency. Monthly is common, with a check before any new purchase.
- Source. The pricing source used for fair value.
- Scope. Whether holdings in subsidiaries or through exchange-traded products count towards the limit.
A passive breach, where the limit is exceeded only because the price rose, is usually treated differently from an active breach caused by a new purchase. Decide in advance whether a passive breach requires selling, reporting or nothing at all. Many companies choose reporting only, with the board deciding whether to act.
Writing limits into policy
A clear limits clause might read along these lines:
- Total Bitcoin holdings shall not exceed X% of consolidated treasury assets, measured at cost at each month end.
- Cash and cash equivalents shall not fall below Y months of budgeted operating expenses.
- No more than Z% of Bitcoin holdings shall be held with any single custodian.
- Any purchase that would cause a limit to be exceeded requires prior board approval.
- A passive breach shall be reported to the audit committee at its next meeting.
Replace X, Y and Z with your own figures. The full structure is set out in how to write a Bitcoin treasury policy.
How The Bitcoin World helps
We help finance teams set asset, counterparty and custody limits that fit their balance sheet and risk appetite, and write them into policy and board materials. Our custody architecture work covers how holdings are split across arrangements. Execution and custody are carried out by licensed third-party institutions.