diff --git a/src/main.rs b/src/main.rs
index 5bdcd7d..53fc819 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -58,6 +58,9 @@ enum Commands {
         #[arg(short, long)]
         use_numeric_accounts: bool,
 
+        #[arg(long, default_value = "E")]
+        account_type: String,
+
         #[arg(short, long, value_name = "FILE")]
         output: Option<PathBuf>,
     },
@@ -81,6 +84,7 @@ fn main() -> anyhow::Result<()> {
             areas,
             cost_centres,
             use_numeric_accounts,
+            account_type,
             output,
         } => allocate_overheads(
             lines,
@@ -89,6 +93,7 @@ fn main() -> anyhow::Result<()> {
             areas,
             cost_centres,
             use_numeric_accounts,
+            account_type,
             output,
         ),
     }
@@ -119,6 +124,7 @@ fn allocate_overheads(
     areas: PathBuf,
     cost_centres: PathBuf,
     use_numeric_accounts: bool,
+    account_type: String,
     output: Option<PathBuf>,
 ) -> anyhow::Result<()> {
     coster_rs::reciprocal_allocation(
@@ -131,7 +137,7 @@ fn allocate_overheads(
         use_numeric_accounts,
         false,
         true,
-        "E".to_owned(),
+        account_type,
     )
 }