> ## Documentation Index
> Fetch the complete documentation index at: https://www.helius.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.
# How to Use getInflationGovernor
> Learn getInflationGovernor use cases, code examples, request parameters, response structure, and tips.
The [`getInflationGovernor`](https://www.helius.dev/docs/api-reference/rpc/http/getinflationgovernor) RPC method returns the current [inflation](https://www.helius.dev/blog/solana-issuance-inflation-schedule) parameters for the Solana cluster. These parameters define how the issuance of new SOL (inflation) is managed over time, including the initial rate, how it tapers, the long-term terminal rate, and allocations for the foundation.
Understanding these parameters is important for analyses related to tokenomics, staking rewards, and the overall economic model of Solana.
## Common Use Cases
* **Economic Analysis:** Retrieve the current parameters governing SOL inflation for research or modeling.
* **Staking Reward Calculation:** While `getInflationRate` gives the current annual rate, `getInflationGovernor` provides the underlying parameters that determine this rate and its future trajectory.
* **Understanding Tokenomics:** Gain insight into the planned token supply changes over time.
## Request Parameters
This method can optionally take a configuration object with the following parameter:
* **`commitment`** (string, optional): Specifies the [commitment level](https://www.helius.dev/blog/solana-commitment-levels) to use when querying the ledger. If not provided, the default commitment of the node is used (usually `finalized`).
## Response Structure
The `result` field of the JSON-RPC response will be an object containing the following inflation parameters (all are `f64` floating-point numbers representing percentages or terms):
* **`initial`**: The initial inflation rate (e.g., 0.15 for 15%).
* **`terminal`**: The long-term, terminal inflation rate (e.g., 0.015 for 1.5%).
* **`taper`**: The rate at which the inflation rate decreases from the `initial` to the `terminal` rate. This is a yearly percentage decrease in the inflation rate itself (e.g., a taper of 0.15 means the inflation rate decreases by 15% each year until it reaches the terminal rate).
* **`foundation`**: The proportion of the newly inflated SOL allocated to the Solana Foundation (e.g., 0.05 for 5%).
* **`foundationTerm`**: The period, in years, over which the `foundation` allocation is distributed.
## Examples
### 1. Get Current Inflation Governor Parameters
This example fetches the current inflation governor settings using the default commitment.
```bash cURL theme={"system"}
curl https://mainnet.helius-rpc.com/?api-key= -X POST -H "Content-Type: application/json" -d \
'{
"jsonrpc": "2.0",
"id": 1,
"method": "getInflationGovernor"
}'
```
```javascript JavaScript (using @solana/web3.js) theme={"system"}
const { Connection } = require('@solana/web3.js');
async function logInflationGovernor() {
const connection = new Connection('https://mainnet.helius-rpc.com/?api-key=');
try {
const inflationGovernor = await connection.getInflationGovernor();
console.log('Current Inflation Governor Parameters:');
console.log(` Initial Rate: ${(inflationGovernor.initial * 100).toFixed(2)}%`);
console.log(` Terminal Rate: ${(inflationGovernor.terminal * 100).toFixed(2)}%`);
console.log(` Taper Rate: ${(inflationGovernor.taper * 100).toFixed(2)}% per year`);
console.log(` Foundation Allocation: ${(inflationGovernor.foundation * 100).toFixed(2)}%`);
console.log(` Foundation Term: ${inflationGovernor.foundationTerm} years`);
// For full raw details:
// console.log(JSON.stringify(inflationGovernor, null, 2));
} catch (error) {
console.error('Error fetching inflation governor:', error);
}
}
logInflationGovernor();
```
### 2. Get Inflation Governor Parameters with 'confirmed' Commitment
```bash cURL theme={"system"}
curl https://mainnet.helius-rpc.com/?api-key= -X POST -H "Content-Type: application/json" -d \
'{
"jsonrpc": "2.0",
"id": 1,
"method": "getInflationGovernor",
"params":[{"commitment":"confirmed"}]
}'
```
```javascript JavaScript (using @solana/web3.js) theme={"system"}
const { Connection } = require('@solana/web3.js');
async function logConfirmedInflationGovernor() {
const connection = new Connection('https://mainnet.helius-rpc.com/?api-key=');
try {
const inflationGovernor = await connection.getInflationGovernor('confirmed');
console.log('Confirmed Inflation Governor Parameters:');
console.log(` Initial Rate: ${(inflationGovernor.initial * 100).toFixed(2)}%`);
console.log(` Terminal Rate: ${(inflationGovernor.terminal * 100).toFixed(2)}%`);
// console.log(JSON.stringify(inflationGovernor, null, 2));
} catch (error) {
console.error('Error fetching confirmed inflation governor:', error);
}
}
logConfirmedInflationGovernor();
```
## Developer Tips
* **Static Parameters:** These inflation parameters are set at the genesis of the cluster or by network upgrades and are generally not expected to change frequently without a formal governance process and network update.
* **Impact on Staking Rewards:** These parameters collectively determine the overall inflation schedule, which in turn affects the Annual Percentage Rate (APR) for staking SOL.
* **Foundation Allocation:** The `foundation` and `foundationTerm` parameters describe a specific portion of the inflation directed towards the Solana Foundation for a defined period to support ecosystem development and operations.
This guide provides an overview of how to use the `getInflationGovernor` RPC method to retrieve and understand the core parameters governing inflation on the Solana network.
## Related Methods
Get the current epoch's inflation rate
Get inflation rewards for specific addresses