Origination fees on borrow

README.md

@@ -76,14 +76,12 @@ use an x86 toolchain when compiling and running the tests.
 
 ## Rust Tests
 
-Run the full test suite with `.scripts/test-program.sh <program_to_test>`
-
-- e.g. `.scripts/test-program.sh all --sane`
+Run the full test suite with `./scripts/test-program.sh <program_to_test>`
+* e.g. `./scripts/test-program.sh all --sane`
 
 Run a single test:
-`.scripts/test-program.sh <program_to_test> <name_of_test>`
-
-- e.g. `.scripts/test-program.sh marginfi configure_bank_success --verbose`
+`./scripts/test-program.sh <program_to_test> <name_of_test>`
+* e.g. `./scripts/test-program.sh marginfi configure_bank_success --verbose`
 
 ## Localnet Anchor Tests
 

clients/rust/marginfi-cli/src/entrypoint.rs

@@ -257,6 +257,8 @@ pub enum BankCommand {
         pf_fa: Option<f64>,
         #[clap(long, help = "Protocol IR fee")]
         pf_ir: Option<f64>,
+        #[clap(long, help = "Protocol origination fee")]
+        pf_or: Option<f64>,
         #[clap(long, arg_enum, help = "Bank risk tier")]
         risk_tier: Option<RiskTierArg>,
         #[clap(long, arg_enum, help = "Bank oracle type")]
@@ -669,6 +671,7 @@ fn bank(subcmd: BankCommand, global_options: &GlobalOptions) -> Result<()> {
             if_ir,
             pf_fa,
             pf_ir,
+            pf_or,
             risk_tier,
             oracle_type,
             oracle_key,
@@ -718,6 +721,7 @@ fn bank(subcmd: BankCommand, global_options: &GlobalOptions) -> Result<()> {
                         insurance_ir_fee: if_ir.map(|x| I80F48::from_num(x).into()),
                         protocol_fixed_fee_apr: pf_fa.map(|x| I80F48::from_num(x).into()),
                         protocol_ir_fee: pf_ir.map(|x| I80F48::from_num(x).into()),
+                        protocol_origination_fee: pf_or.map(|x| I80F48::from_num(x).into()),
                     }),
                     risk_tier: risk_tier.map(|x| x.into()),
                     total_asset_value_init_limit: usd_init_limit,

programs/marginfi/src/instructions/marginfi_account/borrow.rs

@@ -2,6 +2,7 @@ use crate::{
     bank_signer, check,
     constants::{LIQUIDITY_VAULT_AUTHORITY_SEED, LIQUIDITY_VAULT_SEED},
     events::{AccountEventHeader, LendingAccountBorrowEvent},
+    math_error,
     prelude::{MarginfiError, MarginfiGroup, MarginfiResult},
     state::{
         marginfi_account::{BankAccountWrapper, MarginfiAccount, RiskEngine, DISABLED_FLAG},
@@ -56,10 +57,16 @@ pub fn lending_account_borrow<'info>(
         bank_loader.key(),
     )?;
 
+    let mut origination_fee: I80F48 = I80F48::ZERO;
     {
         let mut bank = bank_loader.load_mut()?;
 
         let liquidity_vault_authority_bump = bank.liquidity_vault_authority_bump;
+        let origination_fee_rate: I80F48 = bank
+            .config
+            .interest_rate_config
+            .protocol_origination_fee
+            .into();
 
         let mut bank_account = BankAccountWrapper::find_or_create(
             &bank_loader.key(),
@@ -80,7 +87,21 @@ pub fn lending_account_borrow<'info>(
             .transpose()?
             .unwrap_or(amount);
 
-        bank_account.borrow(I80F48::from_num(amount_pre_fee))?;
+        let origination_fee_u64: u64;
+        if !origination_fee_rate.is_zero() {
+            origination_fee = I80F48::from_num(amount_pre_fee)
+                .checked_mul(origination_fee_rate)
+                .ok_or_else(math_error!())?;
+            origination_fee_u64 = origination_fee.checked_to_num().ok_or_else(math_error!())?;
+
+            // Incurs a borrow that includes the origination fee (but withdraws just the amt)
+            bank_account.borrow(I80F48::from_num(amount_pre_fee) + origination_fee)?;
+        } else {
+            // Incurs a borrow for the amount without any fee
+            origination_fee_u64 = 0;
+            bank_account.borrow(I80F48::from_num(amount_pre_fee))?;
+        }
+
         bank_account.withdraw_spl_transfer(
             amount_pre_fee,
             bank_liquidity_vault.to_account_info(),
@@ -105,8 +126,20 @@ pub fn lending_account_borrow<'info>(
             },
             bank: bank_loader.key(),
             mint: bank.mint,
-            amount: amount_pre_fee,
+            amount: amount_pre_fee + origination_fee_u64,
         });
+    } // release mutable borrow of bank
+
+    // The bank fee account gains the origination fee
+    {
+        let mut bank = bank_loader.load_mut()?;
+        let bank_fees_before: I80F48 = bank.collected_group_fees_outstanding.into();
+        let bank_fees_after: I80F48 = if origination_fee.is_zero() {
+            bank_fees_before
+        } else {
+            bank_fees_before.saturating_add(origination_fee)
+        };
+        bank.collected_group_fees_outstanding = bank_fees_after.into();
     }
 
     // Check account health, if below threshold fail transaction

programs/marginfi/src/state/marginfi_group.rs

@@ -151,29 +151,22 @@ pub struct InterestRateConfigCompact {
     pub insurance_ir_fee: WrappedI80F48,
     pub protocol_fixed_fee_apr: WrappedI80F48,
     pub protocol_ir_fee: WrappedI80F48,
+    pub protocol_origination_fee: WrappedI80F48,
 }
 
 impl From<InterestRateConfigCompact> for InterestRateConfig {
-    fn from(
-        InterestRateConfigCompact {
-            optimal_utilization_rate,
-            plateau_interest_rate,
-            max_interest_rate,
-            insurance_fee_fixed_apr,
-            insurance_ir_fee,
-            protocol_fixed_fee_apr,
-            protocol_ir_fee,
-        }: InterestRateConfigCompact,
-    ) -> Self {
-        Self {
-            optimal_utilization_rate,
-            plateau_interest_rate,
-            max_interest_rate,
-            insurance_fee_fixed_apr,
-            insurance_ir_fee,
-            protocol_fixed_fee_apr,
-            protocol_ir_fee,
-            _padding: [0; 32],
+    fn from(ir_config: InterestRateConfigCompact) -> Self {
+        InterestRateConfig {
+            optimal_utilization_rate: ir_config.optimal_utilization_rate,
+            plateau_interest_rate: ir_config.plateau_interest_rate,
+            max_interest_rate: ir_config.max_interest_rate,
+            insurance_fee_fixed_apr: ir_config.insurance_fee_fixed_apr,
+            insurance_ir_fee: ir_config.insurance_ir_fee,
+            protocol_fixed_fee_apr: ir_config.protocol_fixed_fee_apr,
+            protocol_ir_fee: ir_config.protocol_ir_fee,
+            protocol_origination_fee: ir_config.protocol_origination_fee,
+            _padding0: [0; 16],
+            _padding1: [[0; 32]; 3],
         }
     }
 }
@@ -188,6 +181,7 @@ impl From<InterestRateConfig> for InterestRateConfigCompact {
             insurance_ir_fee: ir_config.insurance_ir_fee,
             protocol_fixed_fee_apr: ir_config.protocol_fixed_fee_apr,
             protocol_ir_fee: ir_config.protocol_ir_fee,
+            protocol_origination_fee: ir_config.protocol_origination_fee,
         }
     }
 }
@@ -215,8 +209,10 @@ pub struct InterestRateConfig {
     pub protocol_fixed_fee_apr: WrappedI80F48,
     /// Earned by the group, goes to `collected_group_fees_outstanding`
     pub protocol_ir_fee: WrappedI80F48,
+    pub protocol_origination_fee: WrappedI80F48,
 
-    pub _padding: [u32; 32],
+    pub _padding0: [u8; 16],
+    pub _padding1: [[u8; 32]; 3],
 }
 
 impl InterestRateConfig {
@@ -418,6 +414,7 @@ pub struct InterestRateConfigOpt {
     pub insurance_ir_fee: Option<WrappedI80F48>,
     pub protocol_fixed_fee_apr: Option<WrappedI80F48>,
     pub protocol_ir_fee: Option<WrappedI80F48>,
+    pub protocol_origination_fee: Option<WrappedI80F48>,
 }
 
 /// Group level configuration to be used in bank accounts.

programs/marginfi/tests/admin_actions/bankruptcy.rs

@@ -285,6 +285,7 @@ async fn marginfi_group_handle_bankruptcy_success(
 #[test_case(10_000., BankMint::PyUSD, BankMint::SolSwb)]
 #[test_case(10_000., BankMint::PyUSD, BankMint::T22WithFee)]
 #[test_case(10_000., BankMint::T22WithFee, BankMint::Sol)]
+#[test_case(10_000., BankMint::Usdc, BankMint::SolSwbOrigFee)] // Sol @ ~ $153
 #[tokio::test]
 async fn marginfi_group_handle_bankruptcy_success_fully_insured(
     borrow_amount: f64,
@@ -447,7 +448,18 @@ async fn marginfi_group_handle_bankruptcy_success_fully_insured(
         test_f.get_bank(&debt_mint).mint.mint.decimals,
         f64
     );
+    let origination_fee_rate: I80F48 = debt_bank
+        .config
+        .interest_rate_config
+        .protocol_origination_fee
+        .into();
+    let origination_fee: I80F48 = I80F48::from_num(borrow_amount_native)
+        .checked_mul(origination_fee_rate)
+        .unwrap()
+        .ceil(); // Round up when repaying
+    let origination_fee_u64: u64 = origination_fee.checked_to_num().expect("out of bounds");
     let actual_borrow_position = borrow_amount_native
+        + origination_fee_u64
         + debt_bank_mint_state
             .get_extension::<TransferFeeConfig>()
             .map(|tf| {
@@ -466,6 +478,7 @@ async fn marginfi_group_handle_bankruptcy_success_fully_insured(
                 })
                 .unwrap_or(0),
     );
+
     let expected_liquidity_vault_delta = I80F48::from(actual_borrow_position);
 
     let actual_liquidity_vault_delta = post_liquidity_vault_balance - pre_liquidity_vault_balance;

programs/marginfi/tests/admin_actions/setup_bank.rs

@@ -319,6 +319,7 @@ async fn configure_bank_success(bank_mint: BankMint) -> anyhow::Result<()> {
             insurance_ir_fee: Some(I80F48::from_num(0.11).into()),
             protocol_fixed_fee_apr: Some(I80F48::from_num(0.51).into()),
             protocol_ir_fee: Some(I80F48::from_num(0.011).into()),
+            protocol_origination_fee: Some(I80F48::ZERO.into()),
         }),
         ..BankConfigOpt::default()
     };

programs/marginfi/tests/user_actions/borrow.rs

@@ -19,6 +19,7 @@ use test_case::test_case;
 #[test_case(128932.0, 9834.0, BankMint::PyUSD, BankMint::SolSwb)]
 #[test_case(240., 0.092, BankMint::PyUSD, BankMint::T22WithFee)]
 #[test_case(36., 1.7, BankMint::T22WithFee, BankMint::Sol)]
+#[test_case(200., 1.1, BankMint::Usdc, BankMint::SolSwbOrigFee)] // Sol @ ~ $153
 #[tokio::test]
 async fn marginfi_account_borrow_success(
     deposit_amount: f64,
@@ -85,6 +86,11 @@ async fn marginfi_account_borrow_success(
         .balance()
         .await;
     let pre_user_debt_accounted = I80F48::ZERO;
+    let pre_fee_balance: I80F48 = debt_bank_f
+        .load()
+        .await
+        .collected_group_fees_outstanding
+        .into();
 
     let res = user_mfi_account_f
         .try_bank_borrow(user_debt_token_account_f.key, debt_bank_f, borrow_amount)
@@ -119,6 +125,16 @@ async fn marginfi_account_borrow_success(
         })
         .unwrap_or(0);
     let borrow_amount_pre_fee = borrow_amount_native + borrow_fee;
+    let origination_fee_rate: I80F48 = debt_bank_f
+        .load() // ?? could optimize load calls in this test?
+        .await
+        .config
+        .interest_rate_config
+        .protocol_origination_fee
+        .into();
+    let origination_fee: I80F48 = I80F48::from_num(borrow_amount_native)
+        .checked_mul(origination_fee_rate)
+        .unwrap();
 
     let active_balance_count = marginfi_account
         .lending_account
@@ -130,13 +146,24 @@ async fn marginfi_account_borrow_success(
     let actual_liquidity_vault_delta = post_vault_balance as i64 - pre_vault_balance as i64;
     let accounted_user_balance_delta = post_user_debt_accounted - pre_user_debt_accounted;
 
+    // The liquidity vault paid out just the pre-origination fee amount (e.g. what the user borrowed
+    // before accounting for the fee)
     assert_eq!(expected_liquidity_vault_delta, actual_liquidity_vault_delta);
     assert_eq_with_tolerance!(
-        I80F48::from(expected_liquidity_vault_delta),
+        // Note: the user still gains debt which includes the origination fee
+        I80F48::from(expected_liquidity_vault_delta) - origination_fee,
         -accounted_user_balance_delta,
         1
     );
 
+    // The outstanding origination fee is recorded
+    let post_fee_balance: I80F48 = debt_bank_f
+        .load()
+        .await
+        .collected_group_fees_outstanding
+        .into();
+    assert_eq!(pre_fee_balance + origination_fee, post_fee_balance);
+
     Ok(())
 }
 
@@ -147,7 +174,7 @@ async fn marginfi_account_borrow_success(
 #[test_case(128_932., 10_000., 15_000.0, BankMint::PyUSD, BankMint::SolSwb)]
 #[test_case(240., 0.092, 500., BankMint::PyUSD, BankMint::T22WithFee)]
 #[test_case(36., 1.7, 1.9, BankMint::T22WithFee, BankMint::Sol)]
-#[test_case(1., 100., 155.1, BankMint::SolSwbPull, BankMint::Usdc)] // Sol @ $155
+#[test_case(1., 100., 155.1, BankMint::SolSwbPull, BankMint::Usdc)] // Sol @ ~ $153
 #[tokio::test]
 async fn marginfi_account_borrow_failure_not_enough_collateral(
     deposit_amount: f64,

programs/marginfi/tests/user_actions/repay.rs

@@ -16,6 +16,7 @@ use test_case::test_case;
 #[test_case(128932., 9834., BankMint::PyUSD, BankMint::SolSwb)]
 #[test_case(240., 0.092, BankMint::PyUSD, BankMint::T22WithFee)]
 #[test_case(36., 20., BankMint::T22WithFee, BankMint::Sol)]
+#[test_case(200., 1.1, BankMint::Usdc, BankMint::SolSwbOrigFee)] // Sol @ ~ $153
 #[tokio::test]
 async fn marginfi_account_repay_success(
     borrow_amount: f64,
@@ -142,6 +143,7 @@ async fn marginfi_account_repay_success(
 #[test_case(128932., BankMint::PyUSD, BankMint::SolSwb)]
 #[test_case(240., BankMint::PyUSD, BankMint::T22WithFee)]
 #[test_case(36., BankMint::T22WithFee, BankMint::Sol)]
+#[test_case(200., BankMint::Usdc, BankMint::SolSwbOrigFee)] // Sol @ ~ $153
 #[tokio::test]
 async fn marginfi_account_repay_all_success(
     borrow_amount: f64,
@@ -261,8 +263,25 @@ async fn marginfi_account_repay_all_success(
         })
         .unwrap_or(0);
 
-    let expected_liquidity_delta =
-        I80F48::from(native!(borrow_amount, debt_bank.mint.mint.decimals, f64) + borrow_fee);
+    let origination_fee_rate: I80F48 = debt_bank
+        .load()
+        .await
+        .config
+        .interest_rate_config
+        .protocol_origination_fee
+        .into();
+    let origination_fee: I80F48 =
+        I80F48::from_num(native!(borrow_amount, debt_bank.mint.mint.decimals, f64))
+            .checked_mul(origination_fee_rate)
+            .unwrap()
+            .ceil(); // Round up when repaying
+    let origination_fee_u64: u64 = origination_fee.checked_to_num().expect("out of bounds");
+
+    let expected_liquidity_delta = I80F48::from(
+        native!(borrow_amount, debt_bank.mint.mint.decimals, f64)
+            + borrow_fee
+            + origination_fee_u64,
+    );
     let actual_liquidity_delta = I80F48::from(post_vault_balance) - I80F48::from(pre_vault_balance);
     let accounted_liquidity_delta = post_accounted_vault_balance - pre_accounted_vault_balance;