diff --git a/sdk/src/payment_plan.rs b/sdk/src/payment_plan.rs
deleted file mode 100644
index 7ec04ce6ef..0000000000
--- a/sdk/src/payment_plan.rs
+++ /dev/null
@@ -1,27 +0,0 @@
-//! The `plan` module provides a domain-specific language for payment plans. Users create BudgetExpr objects that
-//! are given to an interpreter. The interpreter listens for `Witness` transactions,
-//! which it uses to reduce the payment plan. When the plan is reduced to a
-//! `Payment`, the payment is executed.
-
-use crate::pubkey::Pubkey;
-use chrono::prelude::*;
-
-/// The types of events a payment plan can process.
-#[derive(Serialize, Deserialize, Debug, PartialEq, Eq, Clone)]
-pub enum Witness {
-    /// The current time.
-    Timestamp(DateTime<Utc>),
-
-    /// A signature from Pubkey.
-    Signature,
-}
-
-/// Some amount of tokens that should be sent to the `to` `Pubkey`.
-#[derive(Serialize, Deserialize, Debug, PartialEq, Eq, Clone)]
-pub struct Payment {
-    /// Amount to be paid.
-    pub tokens: u64,
-
-    /// The `Pubkey` that `tokens` should be paid to.
-    pub to: Pubkey,
-}