1 files changed, 8 insertions, 0 deletions
diff --git a/src/error.rs b/src/error.rs
new file mode 100644
index 0000000..a9c23b1
--- /dev/null
+++ b/src/error.rs
@@ -0,0 +1,8 @@
+#[derive(thiserror::Error, Debug)]
+pub enum BillSplitError {
+    #[error("Paid amount cannot be negative")]
+    NegativePaidAmount,
+
+    #[error("Duplicate split members found")]
+    DuplicateSplitMembers,
+}