> For the complete documentation index, see [llms.txt](https://docs.primestaking.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.primestaking.xyz/products/xdc-staking-nfts/xdc-nft-staking-reward-system.md). # Reward Model: Base NAV + Boost XDC NFTs in V3 earn from **two stacked sources**. There is no "PrimeFi ecosystem profit share" math. Both layers are fully on-chain: the base layer moves whenever the psXDC vault's NAV is stepped up by a reward distribution (roughly monthly), the boost layer whenever the operator pushes a boost batch into the NFT vault. *** ## The two layers ``` base APY (~5.5%) boost APY (up to ~1.5%) │ │ ▼ ▼ shares × NAV(t) appreciation + Synthetix accumulator slice (the psXDC v3 share price) (rarityMult + level + lockBonus weighted) ``` ### 1. Base NAV: psXDC v3 share-price appreciation Every psXDC v3 share grows in value as validator rewards flow into the underlying vault. When your NFT holds `stakedShares` of psXDC, the **same share count** is returned on `withdraw`, but each share is worth more XDC than it was on `stake`. This layer requires **no action and no claim**; it's already inside the shares. | Aspect | Detail | | ------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------- | | Target APY | \~5.5% | | How it accrues | Via [`PrimeStakedXDC_V3_2`](/products/contract-addresses.md) share-price growth (operator `distributeRewards()` calls raise NAV in steps, \~monthly) | | When you realize it | When you `withdraw` shares from the NFT or `burnAndRedeem` | ### 2. Boost: Synthetix accumulator inside the NFT vault The protocol's [`XdcNftBoostHarvester`](/products/xdc-staking-nfts/boost-harvester.md) periodically pushes XDC into the NFT vault via `notifyBoost`. The vault converts that XDC to psXDC v3 shares and credits the accumulator. Every staked NFT earns a slice proportional to its **weight**: ``` weight = stakedShares × (rarityMultiplier + level + lockBonus) ``` | Aspect | Detail | | ------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Target APR band | \~0.25% (Plentiful unlocked) → \~1.5% (Handcrafted locked) | | How it accrues | `rewardPerWeightStored` increments on every boost push — `notifyBoost` (native XDC, wrapped into psXDC) or `notifyBoostShares` (psXDC directly, added 14 Sep 2026); per-NFT `earned` is computed Synthetix-style | | When you realize it | When you call `claim(tokenId)` from the NFT detail page (or automatically on any other state-changing action like stake/lock/merge/withdraw, which `_settle` first) | | Reward asset | psXDC shares (claimed as psXDC in the app; the contract can also unwrap to XDC via `redeemWithQueue` when `unwrap = true`) | *** ## Combined target ranges | Position | Base NAV (floor) | + Boost slice (when flowing) | Combined target | | ------------------------------- | ---------------- | ---------------------------- | ----------------------- | | Plain psXDC, no NFT | \~5.5% | none | **\~5.5%** | | psXDC staked in an unlocked NFT | **\~5.5%** | \~0.25% | **\~5.5% → \~5.75%** | | psXDC staked in a locked NFT | **\~5.5%** | up to \~1.5% | **\~5.5% → up to \~7%** | {% hint style="info" %} **The floor for every staked NFT is the base \~5.5%.** That layer is purely psXDC v3 share-price growth. It accrues automatically and does not depend on rarity, level, lock status, or harvester cadence. Even if `notifyBoost` hasn't been called in a while, you still earn the base. The boost slice is an **additional** stream on top. {% endhint %} Your individual boost APR depends on: * Your NFT's `rarityMultiplier`, `level`, and whether it's locked. * How much psXDC you have staked (more shares → more weight → more slice). * How much boost the operator has actually pushed (`notifyBoost` / `notifyBoostShares` batches). The UI shows the boost APR realised since the V3 launch (boost paid to date, annualised and capped at the marketed band) alongside the static targets, so you can see what has actually been paid rather than a projection. The first batch landed on 14 Sep 2026 and covered the whole May–Sep period at the full \~1.5% band. *** ## Why no monthly pool The V2 NFT system distributed rewards in a monthly batch process driven off-chain, with per-user payouts. V3 replaces this with an **on-chain Synthetix accumulator** for three reasons: * **Trust-minimized**: every boost batch is a public `BoostNotified` transaction and the split is pure arithmetic on weights — no off-chain allocation list. * **Granular**: one push credits every NFT at once, and `earned(tokenId)` is exact at any moment. * **Composable**: partner integrations can read `earned(tokenId)` directly on-chain at any time. There is no longer a "10% of PrimeFi profits" framing; the funding model and payment history are described in [Boost Harvester (technical)](/products/xdc-staking-nfts/boost-harvester.md). *** ## Maximizing Your Rewards | Strategy | Effect | | -------------------------- | -------------------------------------------------------------------------------------- | | Stake more psXDC shares | More `stakedShares` → linear increase in weight | | Merge two same-rarity NFTs | Higher `rarityMultiplier` on the result | | Level the NFT | Higher `level` term, additive to the multiplier | | Lock the NFT | Adds `lockBonus` to the weight, but disables withdraw/merge/burnAndRedeem until expiry | | Hold higher-rarity NFTs | Higher base `rarityMultiplier` = larger slice for the same staked shares | → [Staking Mechanics](/products/xdc-staking-nfts/xdc-staking-nfts-mechanics.md) → [Boost Harvester (technical)](/products/xdc-staking-nfts/boost-harvester.md) → [Smart Contract Reference](/products/xdc-staking-nfts/smart-contract-functions.md)