diff --git a/atst/app.py b/atst/app.py
index 99279958..4c206878 100644
--- a/atst/app.py
+++ b/atst/app.py
@@ -18,6 +18,7 @@ from atst.routes.dev import bp as dev_routes
 from atst.routes.errors import make_error_pages
 from atst.domain.authnid.crl import CRLCache
 from atst.domain.auth import apply_authentication
+from atst.eda_client import MockEDAClient
 
 
 ENV = os.getenv("FLASK_ENV", "dev")
@@ -41,6 +42,7 @@ def make_app(config):
     make_flask_callbacks(app)
     make_crl_validator(app)
     register_filters(app)
+    make_eda_client(app)
 
     db.init_app(app)
     csrf.init_app(app)
@@ -139,3 +141,5 @@ def make_crl_validator(app):
         crl_locations.append(filename.absolute())
     app.crl_cache = CRLCache(app.config["CA_CHAIN"], crl_locations, logger=app.logger)
 
+def make_eda_client(app):
+    app.eda_client = MockEDAClient()
diff --git a/atst/forms/financial.py b/atst/forms/financial.py
index 72fad1a8..bb55896d 100644
--- a/atst/forms/financial.py
+++ b/atst/forms/financial.py
@@ -1,10 +1,11 @@
 import re
 from wtforms.fields.html5 import EmailField
 from wtforms.fields import StringField
-from wtforms.validators import Required, Email, Regexp
+from wtforms.validators import Required, Email, Regexp, ValidationError
 
 from atst.domain.exceptions import NotFoundError
 from atst.domain.pe_numbers import PENumbers
+from atst.domain.task_orders import TaskOrders
 
 from .fields import NewlineListField, SelectField
 from .forms import ValidatedForm
@@ -114,7 +115,17 @@ class BaseFinancialForm(ValidatedForm):
 
 
 class FinancialForm(BaseFinancialForm):
-    pass
+    def __init__(self, *args, **kwargs):
+        self.eda_client = kwargs.get("eda_client")
+        if self.eda_client:
+            del(kwargs["eda_client"])
+        super().__init__(*args, **kwargs)
+
+    def validate_task_order_id(form, field):
+        try:
+            TaskOrders.get(field.data, client=form.eda_client)
+        except NotFoundError:
+            raise ValidationError("Task Order number not found")
 
 
 class ExtendedFinancialForm(BaseFinancialForm):
diff --git a/atst/routes/requests/financial_verification.py b/atst/routes/requests/financial_verification.py
index b7fc4993..7eef589f 100644
--- a/atst/routes/requests/financial_verification.py
+++ b/atst/routes/requests/financial_verification.py
@@ -1,5 +1,6 @@
 from flask import render_template, redirect, url_for
 from flask import request as http_request
+from flask import current_app as app
 
 from . import requests_bp
 from atst.domain.requests import Requests
@@ -10,7 +11,7 @@ def financial_form(data):
     if http_request.args.get("extended"):
         return ExtendedFinancialForm(data=data)
     else:
-        return FinancialForm(data=data)
+        return FinancialForm(data=data, eda_client=app.eda_client)
 
 
 @requests_bp.route("/requests/verify/<string:request_id>", methods=["GET"])
diff --git a/tests/forms/test_financial.py b/tests/forms/test_financial.py
index 19bb0612..fa9f27bd 100644
--- a/tests/forms/test_financial.py
+++ b/tests/forms/test_financial.py
@@ -1,6 +1,7 @@
 import pytest
 
 from atst.forms.financial import suggest_pe_id, FinancialForm, ExtendedFinancialForm
+from atst.eda_client import MockEDAClient
 
 
 @pytest.mark.parametrize("input_,expected", [
@@ -67,3 +68,15 @@ def test_ba_code_validation(input_, expected):
     is_valid = "ba_code" not in form.errors
 
     assert is_valid == expected
+
+def test_task_order_id_validation():
+    form_invalid = FinancialForm(data={"task_order_id": "1234"}, eda_client=MockEDAClient())
+    form_invalid.validate()
+
+    assert "task_order_id" in form_invalid.errors
+
+    form_valid = FinancialForm(data={"task_order_id": MockEDAClient.MOCK_CONTRACT_NUMBER}, eda_client=MockEDAClient())
+    form_valid.validate()
+
+    assert "task_order_id" not in form_valid.errors
+