Scroll to top

DeFi Pension - Coming Soon

DeFi Pension is a decentralized, blockchain-based retirement savings system that allows individuals to build long-term pension wealth without relying on governments, banks, or pension funds. Instead of centralized fund managers, DeFi pension systems use smart contracts to automate savings, investments, and payouts in a transparent and trustless way.

DeFi Pension – Key Points

What it is :

Decentralized, blockchain-based retirement system.
No reliance on governments, banks, or traditional pension funds.
Smart contracts automate savings, investments, and payouts.

How it works :

Contributions: Monthly/yearly in stablecoins or crypto.
Investments: Low-risk DeFi strategies (lending, staking, yield vaults).
Time-locking: Funds locked until retirement; early withdrawal penalized.
Payouts: Scheduled, automated to user wallets upon retirement.

Returns & Transparency:

Variable, market-driven returns.
Fully verifiable on-chain (balances, yields, rules).
Real-time monitoring by users.

Advantages:

Self-custody of assets.
Global, permissionless access.
Inflation protection via yield generation.
Resistant to government/institutional mismanagement.
Ideal for freelancers, gig workers, countries with weak pension systems.

Risks & Mitigation:

Risks: Smart contract bugs, market volatility, stablecoin failures, regulatory uncertainty.
Mitigation: Diversification, conservative strategies, audits, insurance layers.

Summary:

Self-sovereign, programmable retirement system.
Combines long-term savings discipline with DeFi innovation.
Provides financial security, transparency, and automation.

DeFi Pension Protocol

DeFi Pension

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

/*
-------------------------------------------------------
DeFi Pension Prototype
-------------------------------------------------------
⚠️ Educational only — NOT audited
-------------------------------------------------------
*/

interface IERC20 {
    function transfer(address to, uint256 amount) external returns (bool);

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);

    function balanceOf(address user) external view returns (uint256);

    function approve(address spender, uint256 amount) external returns (bool);
}

/*
 Strategy interface:
 Could connect to Aave, Compound, Yearn, etc.
 */
interface IPensionStrategy {
    function deposit(uint256 amount) external;
    function withdraw(uint256 amount) external;
    function totalAssets() external view returns (uint256);
}

/*
-------------------------------------------------------
 MAIN CONTRACT
-------------------------------------------------------
*/
contract DeFiPension {
    IERC20 public immutable asset;

    address public dao; // governance / multisig

    IPensionStrategy public strategy;

    uint256 public constant BASIS_POINTS = 10_000;
    uint256 public constant EARLY_EXIT_PENALTY_BP = 1_000; // 10%

    // =============================
    // USER PLAN STRUCT
    // =============================

    struct PensionPlan {
        uint256 totalContributed;
        uint256 shares;
        uint256 retirementTime;
        uint256 lastPayout;
        bool retired;
    }

    mapping(address => PensionPlan) public plans;

    uint256 public totalShares;

    // =============================
    // EVENTS
    // =============================

    event PlanCreated(address indexed user, uint256 retirementTime);
    event Contribution(address indexed user, uint256 amount);
    event EarlyWithdraw(address indexed user, uint256 amount, uint256 penalty);
    event Retired(address indexed user);
    event PensionPaid(address indexed user, uint256 amount);
    event StrategyUpdated(address newStrategy);

    modifier onlyDAO() {
        require(msg.sender == dao, "Not DAO");
        _;
    }

    constructor(
        address _asset,
        address _strategy,
        address _dao
    ) {
        asset = IERC20(_asset);
        strategy = IPensionStrategy(_strategy);
        dao = _dao;

        asset.approve(_strategy, type(uint256).max);
    }

    // =============================
    // PLAN SETUP
    // =============================

    function createPlan(uint256 retirementTime) external {
        require(plans[msg.sender].retirementTime == 0, "Plan exists");
        require(retirementTime > block.timestamp + 365 days, "Too soon");

        plans[msg.sender] = PensionPlan({
            totalContributed: 0,
            shares: 0,
            retirementTime: retirementTime,
            lastPayout: 0,
            retired: false
        });

        emit PlanCreated(msg.sender, retirementTime);
    }

    // =============================
    // CONTRIBUTE
    // =============================

    function contribute(uint256 amount) external {
        PensionPlan storage p = plans[msg.sender];
        require(p.retirementTime > 0, "No plan");
        require(!p.retired, "Already retired");

        asset.transferFrom(msg.sender, address(this), amount);

        uint256 poolValueBefore = strategy.totalAssets();
        strategy.deposit(amount);

        uint256 mintedShares = totalShares == 0
            ? amount
            : (amount * totalShares) / poolValueBefore;

        p.shares += mintedShares;
        p.totalContributed += amount;

        totalShares += mintedShares;

        emit Contribution(msg.sender, amount);
    }

    // =============================
    // RETIREMENT
    // =============================

    function enterRetirement() external {
        PensionPlan storage p = plans[msg.sender];

        require(!p.retired, "Already retired");
        require(block.timestamp >= p.retirementTime, "Too early");

        p.retired = true;
        p.lastPayout = block.timestamp;

        emit Retired(msg.sender);
    }

    // =============================
    // PAYOUT LOGIC
    // =============================

    function claimPension() external {
        PensionPlan storage p = plans[msg.sender];

        require(p.retired, "Not retired");

        uint256 elapsed = block.timestamp - p.lastPayout;
        require(elapsed >= 30 days, "Too soon");

        uint256 poolAssets = strategy.totalAssets();

        uint256 entitled = (poolAssets * p.shares) / totalShares;

        // withdraw 2% per month as annuity-style
        uint256 payout = (entitled * 200) / BASIS_POINTS;

        p.lastPayout = block.timestamp;

        strategy.withdraw(payout);

        asset.transfer(msg.sender, payout);

        emit PensionPaid(msg.sender, payout);
    }

    // =============================
    // EARLY EXIT
    // =============================

    function emergencyWithdraw() external {
        PensionPlan storage p = plans[msg.sender];
        require(!p.retired, "Already retired");

        uint256 poolAssets = strategy.totalAssets();
        uint256 entitled = (poolAssets * p.shares) / totalShares;

        uint256 penalty = (entitled * EARLY_EXIT_PENALTY_BP) /
            BASIS_POINTS;

        uint256 payout = entitled - penalty;

        totalShares -= p.shares;

        delete plans[msg.sender];

        strategy.withdraw(entitled);

        asset.transfer(msg.sender, payout);
        asset.transfer(dao, penalty);

        emit EarlyWithdraw(msg.sender, payout, penalty);
    }

    // =============================
    // ADMIN
    // =============================

    function updateStrategy(address newStrategy) external onlyDAO {
        strategy = IPensionStrategy(newStrategy);
        asset.approve(newStrategy, type(uint256).max);

        emit StrategyUpdated(newStrategy);
    }
}