Explore the complete Cardano ADA supply distribution for epoch 637, which began on 2026-06-13 and lasted five days.
This interactive insight helps you understand how the total ADA supply is allocated across key categories — from circulating supply and reserves to staking rewards and the treasury.
At the close of each 5-day epoch, the Ouroboros protocol performs supply and reward calculations across all participating nodes. The resulting transfers distribute staking rewards and allocate a portion to the Cardano treasury, supporting ongoing development and ecosystem growth.
| Category | ada | % | Description |
|---|---|---|---|
| Circulation | 36,373,183,721 ada | 80.83% | Sum of all circulating UTxOs |
| Treasury | 1,486,632,641 ada | 3.30% | All ada currently in the treasury pot |
| Rewards | 826,656,960 ada | 1.84% | All unclaimed rewards |
| Deposits Stake | 4,414,530 ada | 0.01% | Deposit pot for registered stake pools and staking accounts |
| Deposits DRep | 522,500 ada | 0.00% | Deposit pot for registered DReps |
| Deposits Proposal | 1,200,000 ada | 0.00% | Deposit pot for active governance actions |
| Fees | 39,473 ada | 0.00% | Fees collected |
| Total Supply | 38,692,649,825 ada | 85.98% | All ada in circulation + unclaimed rewards + deposits + fees + treasury |
| Reserves | 6,307,350,175 ada | 14.02% | Difference between maximum and total supply |
| Maximum supply | 45,000,000,000 ada | 100.00% | The maximum amount of ada that can ever exist, based on the genesis block definition. |
Epoch 637 facts:
Q: How did the values change compared to the previous Epoch?
A: At the start of epoch 637, the Cardano Ouroboros protocol distributed the staking rewards for epoch 635 and transaction fees collected in epoch 636. This transferred 10,187,510 ada from the reserves to the active supply, equivalent to a 0.16% decrease in reserves and a 0.03% increase in active supply.
Q: How much ada was added to the treasury?
A: In epoch 637, rewards and fees contributed 3,727,216 ada — 36.59% of the overall staking rewards — to the treasury. However, withdrawals of 32,916,000 ada from this epoch outweighed this amount, resulting in a net decrease of 29,188,784 ada (-1.96%) compared to the previous epoch.
Q: How many fees were collected and distributed?
A: In epoch 637, a total of 39,473 ada in transaction fees was collected for a distribution next epoch. 374,179 ada from epoch 636 was distributed as rewards and treasury extension. These fees came from 202,896 transactions, averaging 0.32 ada per transaction, and accounted for 0.71% of the total rewards distributed
Q: Were there withdrawals from the treasury in epoch 637?
A: There was 1 treasury withdrawal totaling 32,916,000 ada.
- Cardano Vision 2026: Human Centred, Scalable, Post Quantum Secure - IO Research: 32,916,000 ada [read more]
Q: Where can I learn more about the Cardano Mainnet reward calculation?
The reward calculation is based on the ledger specification. Further information can be found in the Cardano Blueprint documentation. There is an independent Java implementation with many explanations, as well as a training course from Cardano Academy on calculating staking rewards.