On August 5, 2026, Kaspa's block reward is scheduled to decrease from its current level to 2.45 KAS per block. This isn't a one-time event or a bug; it's the latest monthly step in the network's "chromatic" emission schedule—a deliberate, smooth deflationary curve that contrasts sharply with the halving model familiar to Bitcoin miners. For anyone holding KAS or contributing hashrate, understanding this mechanic is crucial for long-term planning.
A Different Kind of Halving
Most proof-of-work miners are conditioned to think in terms of Bitcoin's dramatic four-year cycle: a 50% reward cut that arrives like a scheduled cliff, forcing immediate recalculations of profitability and network security. Kaspa's developers implemented a fundamentally different philosophy.
Chromatic Schedule: Kaspa's emission model where the block reward decreases by a fixed, small percentage (~5.6%) every month. Named for its musical analogy: 440 KAS/sec is concert pitch A4, each monthly step is a semitone, and a yearly halving is an octave down.
The core of this model is a 426-entry subsidy table hard-coded into the protocol. Starting from May 2022, the reward begins at 440 KAS per second and reduces by a factor of (1/2)^(1/12) every month. This math produces a consistent ~5.6% monthly decline, culminating in a 50% reduction over the course of a full year. The result is a gradual, predictable taper rather than a sudden shock.
This design choice has a direct, practical implication: no single block height triggers a panic. Miners and infrastructure operators can anticipate the steady erosion of the subsidy per unit of hashrate over time, allowing for more gradual operational adjustments compared to the scramble that can precede a Bitcoin halving.
The Technical Shift: Per-Second, Not Per-Block
A key evolution in Kaspa's emission logic came with the Crescendo upgrade and KIP-14. The subsidy table was formally changed from a per-block reward to a per-second reward. This was a necessary adaptation to the network's high and potentially variable block rates.
As the source explains, today at 10 Blocks Per Second (BPS), the per-second subsidy is simply divided by 10 to determine the per-block payout. This decouples emission from the block rate itself. If BPS were to increase in the future through protocol upgrades, the total KAS mined per second remains fixed by the schedule, preserving the intended deflationary curve. This is a critical piece of long-term economic design, ensuring the emission path is predictable regardless of performance improvements to the DAG structure.
As of the date of this writing, the source notes the subsidy is approximately 24.5 KAS per second. At 10 BPS, that mathematically yields the 2.45 KAS per block figure set for August 5. This precision is possible because the schedule is time-based, not height-based.
What This Means for KAS Holders and Miners
For Miners: The gradual reduction requires a mindset shift from anticipating periodic "halving events" to planning for continuous, marginal revenue decline. This stresses operational efficiency. Profitability will increasingly depend on low-cost energy and hardware uptime, as the revenue per gigahash steadily declines month-over-month. The smooth curve also provides a clearer, ongoing signal for the health of the fee market; miners have decades of predictable, shrinking subsidy to observe whether transaction volume is growing sufficiently to compensate.
For Holders: The predictable, disinflationary supply schedule is a core tenet of Kaspa's monetary policy. Unlike assets with abrupt supply shocks that can trigger speculative volatility around known dates, Kaspa's emission is designed for long-term stability. The total max supply of ~28.7 billion KAS is expected to be fully mined around 2057, after which miners rely entirely on fees. For those practicing self-custody, this long-term view underscores the importance of securing one's own keys through robust, time-tested methods.
As block rewards shrink, the value of each KAS you hold becomes more critical to secure. Tools built on Kaspa's covenant technology, like Kaspa Safe, are designed for this long-term horizon. A withdrawal time-lock can protect against theft, and its non-custodial on-chain nature means it functions independently of any third-party service—a principle that becomes more relevant as the network's economic model evolves toward fee-based security.
The Bitcoin Comparison: Smoothing the Cliff
The most frequent comparison is, naturally, to Bitcoin. The next Bitcoin halving (expected around 2028) will instantly cut the block reward from 3.125 BTC to 1.5625 BTC. While this creates a known, anticipated shock, it's a binary event that historically leads to significant miner capitulation, hash rate volatility, and intense short-term market speculation.
Kaspa's model aims to avoid this. The ~5.6% monthly drop is the equivalent of a Bitcoin halving spread evenly over 365 days. There is no single "halving day" to game, no cliff to fall off of. The transition is so gradual that the network can absorb it continuously. For the PoW ecosystem, this represents an interesting alternative economic experiment: can a smooth emission curve provide more stable network security and miner economics than the tried-and-true, but jarring, halving model?
Looking Ahead: Fees and the Final Note
The chromatic schedule is a roadmap to a fee-only future. The code has a terminal entry of 0, ending emission approximately 35.5 years after the deflationary phase began in May 2022. This makes the growth of a robust fee market not just a feature, but an existential necessity for the network's long-term security model.
The coming years will be a test. Will the predictable, declining subsidy, paired with Kaspa's high throughput and fast settlement, foster a transactional economy large enough to sustain decentralized mining? The smooth emission curve is designed to provide the network with decades of stability to find out, without any single disruptive moment.
The step to 2.45 KAS per block on August 5 is just one note in a long, descending scale. For the Kaspa ecosystem, it's a reminder of the network's carefully considered economic design—one that favors gradual, predictable change over dramatic events, a philosophy that aligns well with the needs of long-term miners and self-sovereign users.
FAQ
What is the Kaspa chromatic emission schedule?
It's a deflationary reward schedule where the per-second subsidy decreases monthly by a factor of (1/2)^(1/12), approximately 5.6%. This results in a smooth yearly halving, designed to avoid the abrupt supply shocks of Bitcoin's 4-year cycle.
Why is the reward per block decreasing on August 5, 2026?
The schedule is time-based. On that date, the monthly table dictates a new, lower per-second subsidy. At the current 10 blocks per second (BPS), this translates to a new per-block reward of 2.45 KAS.
How does this differ from a Bitcoin halving?
Bitcoin's block reward drops by 50% abruptly every 210,000 blocks (~4 years). Kaspa's emission decreases by a small, predictable amount every month, creating a gradual, "smooth" reduction. The goal is a less disruptive transition for miners and the network.
Will miners only earn fees after the emission ends?
Yes. The emission schedule table has a final entry of 0, ending around 2057. After that, miner revenue will consist solely of transaction fees. There is no tail emission.
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