diff --git a/.gitignore b/.gitignore
index d4cb36bd..ed5ce899 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,8 @@
 /iati_datastore/iatilib/frontend/docs
 /iati_datastore/iatilib/frontend/querybuilder
 /dump.rdb
+/iati_datastore/iatilib/messages.pot
+/iati_datastore/iatilib/translations/*/LC_MESSAGES/messages.mo
 
 # Byte-compiled / optimized / DLL files
 __pycache__/
diff --git a/README.md b/README.md
index 1c8a8d32..1a3d5343 100644
--- a/README.md
+++ b/README.md
@@ -347,3 +347,22 @@ Then in the 2 requirements*.txt files, look for the line:
 And edit them to:
 
     -e iati_datastore
+
+I18N - Flask Application
+------------------------
+
+    cd iati_datastore/iatilib
+
+To add a new locale:
+
+    pybabel extract -F babel.cfg -o messages.pot .
+    pybabel init -i messages.pot -d translations -l fr
+
+If strings change in app and you want to reparse the app for new strings, run:
+
+    pybabel extract -F babel.cfg  -k lazy_gettext -o messages.pot .
+    pybabel update -i messages.pot -d translations
+
+When .po files change with new content, or when deploying the app:
+
+    pybabel compile -d translations
diff --git a/fabfile.py b/fabfile.py
index 90b3987d..8743bc5e 100644
--- a/fabfile.py
+++ b/fabfile.py
@@ -22,6 +22,8 @@ def deploy(conn):
         conn.run('iati db upgrade')
         # build the docs
         conn.run('iati build-docs')
+        # create translations
+        conn.run('(cd iati_datastore/iatilib && pybabel compile -d translations)')
         # build the query builder
         conn.run('iati build-query-builder --deploy-url https://datastore.codeforiati.org')
         # webserver
diff --git a/iati_datastore/iatilib/babel.cfg b/iati_datastore/iatilib/babel.cfg
new file mode 100644
index 00000000..efceab81
--- /dev/null
+++ b/iati_datastore/iatilib/babel.cfg
@@ -0,0 +1 @@
+[python: **.py]
diff --git a/iati_datastore/iatilib/frontend/api1.py b/iati_datastore/iatilib/frontend/api1.py
index d8a5f2f9..01f3c83f 100644
--- a/iati_datastore/iatilib/frontend/api1.py
+++ b/iati_datastore/iatilib/frontend/api1.py
@@ -287,6 +287,7 @@ def validate_args(self):
         if not hasattr(self, "_valid_args"):
             args = MultiDict(request.args)
             args.pop("ref", None)
+            args.pop("locale", None)
             self._valid_args = validators.activity_api_args(args)
         return self._valid_args
 
diff --git a/iati_datastore/iatilib/frontend/app.py b/iati_datastore/iatilib/frontend/app.py
index 4615840a..d72bb69e 100644
--- a/iati_datastore/iatilib/frontend/app.py
+++ b/iati_datastore/iatilib/frontend/app.py
@@ -1,4 +1,5 @@
-from flask import Flask, render_template
+from flask import Flask, render_template, request
+from flask_babel import Babel
 from flask_cors import CORS
 
 from iatilib import db, rq, migrate
@@ -13,6 +14,8 @@
 def create_app(config_object='iatilib.config.Config'):
     app = Flask(__name__.split('.')[0])
     app.config.from_object(config_object)
+    babel = Babel(app, configure_jinja=False)
+    babel.localeselector(get_locale)
     register_extensions(app)
     register_blueprints(app)
     register_error_handlers(app)
@@ -40,3 +43,7 @@ def register_error_handlers(app):
     for code in (500, 501, 502, 503, 504):
         app.register_error_handler(
             code, lambda x: (render_template('error/5xx.html'), code))
+
+
+def get_locale():
+    return request.args.get("locale", "en")
diff --git a/iati_datastore/iatilib/frontend/serialize/csv.py b/iati_datastore/iatilib/frontend/serialize/csv.py
index 5241035e..ab24ba4e 100644
--- a/iati_datastore/iatilib/frontend/serialize/csv.py
+++ b/iati_datastore/iatilib/frontend/serialize/csv.py
@@ -7,6 +7,71 @@
 from iatilib import codelists
 from pyexcelerate import Workbook
 from openpyxl_copy.utils import get_column_letter
+from flask_babel import gettext, lazy_gettext
+
+
+# I18N
+# Call lazy_gettext on everything we are using as column header. This way Babel will pick it up as a translate-able string.
+# TODO this is a pain as we have to duplicate all headers. Instead, write a custom extraction method later: https://babel.pocoo.org/en/latest/messages.html#writing-extraction-methods
+lazy_gettext("iati-identifier")
+lazy_gettext("hierarchy")
+lazy_gettext("last-updated-datetime")
+lazy_gettext("default-language")
+lazy_gettext("reporting-org")
+lazy_gettext("reporting-org-ref")
+lazy_gettext("reporting-org-type")
+lazy_gettext("reporting-org-type-code")
+lazy_gettext("title")
+lazy_gettext("description")
+lazy_gettext("activity-status-code")
+lazy_gettext("start-planned")
+lazy_gettext("end-planned")
+lazy_gettext("start-actual")
+lazy_gettext("end-actual")
+lazy_gettext("participating-org (Accountable)")
+lazy_gettext("participating-org-ref (Accountable)")
+lazy_gettext("participating-org-type (Accountable)")
+lazy_gettext("participating-org-type-code (Accountable)")
+lazy_gettext("participating-org (Funding)")
+lazy_gettext("participating-org-ref (Funding)")
+lazy_gettext("participating-org-type (Funding)")
+lazy_gettext("participating-org-type-code (Funding)")
+lazy_gettext("participating-org (Extending)")
+lazy_gettext("participating-org-ref (Extending)")
+lazy_gettext("participating-org-type (Extending)")
+lazy_gettext("participating-org-type-code (Extending)")
+lazy_gettext("participating-org (Implementing)")
+lazy_gettext("participating-org-ref (Implementing)")
+lazy_gettext("participating-org-type (Implementing)")
+lazy_gettext("participating-org-type-code (Implementing)")
+lazy_gettext("recipient-country-code")
+lazy_gettext("recipient-country")
+lazy_gettext("recipient-country-percentage")
+lazy_gettext("sector-code")
+lazy_gettext("sector")
+lazy_gettext("sector-percentage")
+lazy_gettext("sector-vocabulary")
+lazy_gettext("sector-vocabulary-code")
+lazy_gettext("collaboration-type-code")
+lazy_gettext("default-finance-type-code")
+lazy_gettext("default-flow-type-code")
+lazy_gettext("default-aid-type-code")
+lazy_gettext("default-tied-status-code")
+lazy_gettext("recipient-country-code")
+lazy_gettext("recipient-country")
+lazy_gettext("recipient-country-percentage")
+lazy_gettext("recipient-region-code")
+lazy_gettext("recipient-region")
+lazy_gettext("recipient-region-percentage")
+lazy_gettext("default-currency")
+lazy_gettext("currency")
+lazy_gettext('total-Commitment')
+lazy_gettext("total-Disbursement")
+lazy_gettext("total-Expenditure")
+lazy_gettext("total-Incoming Funds")
+lazy_gettext("total-Interest Repayment")
+lazy_gettext("total-Loan Repayment")
+lazy_gettext("total-Reimbursement")
 
 
 def total(column):
@@ -414,7 +479,7 @@ def line(row):
             writer = unicodecsv.writer(out)
             writer.writerow(row)
             return out.getvalue()
-        yield line(self.fields_by_major_version['1'].keys())
+        yield line([gettext(label) for label in self.fields_by_major_version['1'].keys()])
         get_major_version = self.get_major_version
         for obj in data.items:
             row = [accessor(obj) for accessor in self.fields_by_major_version[get_major_version(obj)].values()]
@@ -436,7 +501,7 @@ def __call__(self, data, wrapped=True):
         wb = Workbook()
         ws = wb.new_sheet("data")
         # Headers
-        headers = self.fields_by_major_version['1'].keys()
+        headers = [gettext(label) for label in self.fields_by_major_version['1'].keys()]
         final_column = get_column_letter(len(headers))
         ws.range("A1", final_column+"1").value = [headers]
         # Data
diff --git a/iati_datastore/iatilib/translations/fr/LC_MESSAGES/messages.po b/iati_datastore/iatilib/translations/fr/LC_MESSAGES/messages.po
new file mode 100644
index 00000000..432a70cc
--- /dev/null
+++ b/iati_datastore/iatilib/translations/fr/LC_MESSAGES/messages.po
@@ -0,0 +1,284 @@
+# French translations for PROJECT.
+# Copyright (C) 2022 ORGANIZATION
+# This file is distributed under the same license as the PROJECT project.
+# FIRST AUTHOR <EMAIL@ADDRESS>, 2022.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: PROJECT VERSION\n"
+"Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
+"POT-Creation-Date: 2022-05-18 12:05+0000\n"
+"PO-Revision-Date: 2022-05-18 10:34+0000\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language: fr\n"
+"Language-Team: fr <LL@li.org>\n"
+"Plural-Forms: nplurals=2; plural=(n > 1)\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Babel 2.9.1\n"
+
+#: crawler.py:175
+msgid "Duplicate identifier {0} in same resource document"
+msgstr ""
+
+#: parse.py:135
+msgid ""
+"Failed to import a valid reporting-org.type in activity {0}, error was: "
+"{1}"
+msgstr ""
+
+#: parse.py:157
+msgid ""
+"Failed to import a valid sector percentage:{0} in activity {1}, error "
+"was: {2}"
+msgstr ""
+
+#: parse.py:258 parse.py:501
+msgid "Failed to import a valid {0} in activity {1}, error was: {2}"
+msgstr ""
+
+#: parse.py:273
+msgid "Failed to import a valid transaction in activity {0}, error was: {1}"
+msgstr ""
+
+#: parse.py:297
+msgid "uFailed to import a valid {0} in activity {1}, error was: {2}"
+msgstr ""
+
+#: parse.py:343
+msgid "uFailed to import a valid budget:{0} in activity {1}, error was: {2}"
+msgstr ""
+
+#: parse.py:377
+msgid "Failed to import a valid related-activity in activity {0}, error was: {1}"
+msgstr ""
+
+#: parse.py:535
+msgid "Failed to import a valid Activity error was: {0}"
+msgstr ""
+
+#: frontend/serialize/csv.py:16
+msgid "iati-identifier"
+msgstr ""
+
+#: frontend/serialize/csv.py:17
+msgid "hierarchy"
+msgstr ""
+
+#: frontend/serialize/csv.py:18
+msgid "last-updated-datetime"
+msgstr ""
+
+#: frontend/serialize/csv.py:19
+msgid "default-language"
+msgstr ""
+
+#: frontend/serialize/csv.py:20
+msgid "reporting-org"
+msgstr ""
+
+#: frontend/serialize/csv.py:21
+msgid "reporting-org-ref"
+msgstr ""
+
+#: frontend/serialize/csv.py:22
+msgid "reporting-org-type"
+msgstr ""
+
+#: frontend/serialize/csv.py:23
+msgid "reporting-org-type-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:24
+msgid "title"
+msgstr "titre"
+
+#: frontend/serialize/csv.py:25
+msgid "description"
+msgstr ""
+
+#: frontend/serialize/csv.py:26
+msgid "activity-status-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:27
+msgid "start-planned"
+msgstr ""
+
+#: frontend/serialize/csv.py:28
+msgid "end-planned"
+msgstr ""
+
+#: frontend/serialize/csv.py:29
+msgid "start-actual"
+msgstr ""
+
+#: frontend/serialize/csv.py:30
+msgid "end-actual"
+msgstr ""
+
+#: frontend/serialize/csv.py:31
+msgid "participating-org (Accountable)"
+msgstr ""
+
+#: frontend/serialize/csv.py:32
+msgid "participating-org-ref (Accountable)"
+msgstr ""
+
+#: frontend/serialize/csv.py:33
+msgid "participating-org-type (Accountable)"
+msgstr ""
+
+#: frontend/serialize/csv.py:34
+msgid "participating-org-type-code (Accountable)"
+msgstr ""
+
+#: frontend/serialize/csv.py:35
+msgid "participating-org (Funding)"
+msgstr ""
+
+#: frontend/serialize/csv.py:36
+msgid "participating-org-ref (Funding)"
+msgstr ""
+
+#: frontend/serialize/csv.py:37
+msgid "participating-org-type (Funding)"
+msgstr ""
+
+#: frontend/serialize/csv.py:38
+msgid "participating-org-type-code (Funding)"
+msgstr ""
+
+#: frontend/serialize/csv.py:39
+msgid "participating-org (Extending)"
+msgstr ""
+
+#: frontend/serialize/csv.py:40
+msgid "participating-org-ref (Extending)"
+msgstr ""
+
+#: frontend/serialize/csv.py:41
+msgid "participating-org-type (Extending)"
+msgstr ""
+
+#: frontend/serialize/csv.py:42
+msgid "participating-org-type-code (Extending)"
+msgstr ""
+
+#: frontend/serialize/csv.py:43
+msgid "participating-org (Implementing)"
+msgstr ""
+
+#: frontend/serialize/csv.py:44
+msgid "participating-org-ref (Implementing)"
+msgstr ""
+
+#: frontend/serialize/csv.py:45
+msgid "participating-org-type (Implementing)"
+msgstr ""
+
+#: frontend/serialize/csv.py:46
+msgid "participating-org-type-code (Implementing)"
+msgstr ""
+
+#: frontend/serialize/csv.py:47 frontend/serialize/csv.py:60
+msgid "recipient-country-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:48 frontend/serialize/csv.py:61
+msgid "recipient-country"
+msgstr ""
+
+#: frontend/serialize/csv.py:49 frontend/serialize/csv.py:62
+msgid "recipient-country-percentage"
+msgstr ""
+
+#: frontend/serialize/csv.py:50
+msgid "sector-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:51
+msgid "sector"
+msgstr ""
+
+#: frontend/serialize/csv.py:52
+msgid "sector-percentage"
+msgstr ""
+
+#: frontend/serialize/csv.py:53
+msgid "sector-vocabulary"
+msgstr ""
+
+#: frontend/serialize/csv.py:54
+msgid "sector-vocabulary-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:55
+msgid "collaboration-type-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:56
+msgid "default-finance-type-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:57
+msgid "default-flow-type-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:58
+msgid "default-aid-type-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:59
+msgid "default-tied-status-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:63
+msgid "recipient-region-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:64
+msgid "recipient-region"
+msgstr ""
+
+#: frontend/serialize/csv.py:65
+msgid "recipient-region-percentage"
+msgstr ""
+
+#: frontend/serialize/csv.py:66
+msgid "default-currency"
+msgstr ""
+
+#: frontend/serialize/csv.py:67
+msgid "currency"
+msgstr ""
+
+#: frontend/serialize/csv.py:68
+msgid "total-Commitment"
+msgstr ""
+
+#: frontend/serialize/csv.py:69
+msgid "total-Disbursement"
+msgstr ""
+
+#: frontend/serialize/csv.py:70
+msgid "total-Expenditure"
+msgstr ""
+
+#: frontend/serialize/csv.py:71
+msgid "total-Incoming Funds"
+msgstr ""
+
+#: frontend/serialize/csv.py:72
+msgid "total-Interest Repayment"
+msgstr ""
+
+#: frontend/serialize/csv.py:73
+msgid "total-Loan Repayment"
+msgstr ""
+
+#: frontend/serialize/csv.py:74
+msgid "total-Reimbursement"
+msgstr ""
+
diff --git a/iati_datastore/iatilib/translations/pt/LC_MESSAGES/messages.po b/iati_datastore/iatilib/translations/pt/LC_MESSAGES/messages.po
new file mode 100644
index 00000000..85da2594
--- /dev/null
+++ b/iati_datastore/iatilib/translations/pt/LC_MESSAGES/messages.po
@@ -0,0 +1,284 @@
+# Portuguese translations for PROJECT.
+# Copyright (C) 2022 ORGANIZATION
+# This file is distributed under the same license as the PROJECT project.
+# FIRST AUTHOR <EMAIL@ADDRESS>, 2022.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: PROJECT VERSION\n"
+"Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
+"POT-Creation-Date: 2022-05-18 12:05+0000\n"
+"PO-Revision-Date: 2022-05-18 10:35+0000\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language: pt\n"
+"Language-Team: pt <LL@li.org>\n"
+"Plural-Forms: nplurals=2; plural=(n != 1)\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=utf-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Generated-By: Babel 2.9.1\n"
+
+#: crawler.py:175
+msgid "Duplicate identifier {0} in same resource document"
+msgstr ""
+
+#: parse.py:135
+msgid ""
+"Failed to import a valid reporting-org.type in activity {0}, error was: "
+"{1}"
+msgstr ""
+
+#: parse.py:157
+msgid ""
+"Failed to import a valid sector percentage:{0} in activity {1}, error "
+"was: {2}"
+msgstr ""
+
+#: parse.py:258 parse.py:501
+msgid "Failed to import a valid {0} in activity {1}, error was: {2}"
+msgstr ""
+
+#: parse.py:273
+msgid "Failed to import a valid transaction in activity {0}, error was: {1}"
+msgstr ""
+
+#: parse.py:297
+msgid "uFailed to import a valid {0} in activity {1}, error was: {2}"
+msgstr ""
+
+#: parse.py:343
+msgid "uFailed to import a valid budget:{0} in activity {1}, error was: {2}"
+msgstr ""
+
+#: parse.py:377
+msgid "Failed to import a valid related-activity in activity {0}, error was: {1}"
+msgstr ""
+
+#: parse.py:535
+msgid "Failed to import a valid Activity error was: {0}"
+msgstr ""
+
+#: frontend/serialize/csv.py:16
+msgid "iati-identifier"
+msgstr ""
+
+#: frontend/serialize/csv.py:17
+msgid "hierarchy"
+msgstr ""
+
+#: frontend/serialize/csv.py:18
+msgid "last-updated-datetime"
+msgstr ""
+
+#: frontend/serialize/csv.py:19
+msgid "default-language"
+msgstr ""
+
+#: frontend/serialize/csv.py:20
+msgid "reporting-org"
+msgstr ""
+
+#: frontend/serialize/csv.py:21
+msgid "reporting-org-ref"
+msgstr ""
+
+#: frontend/serialize/csv.py:22
+msgid "reporting-org-type"
+msgstr ""
+
+#: frontend/serialize/csv.py:23
+msgid "reporting-org-type-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:24
+msgid "title"
+msgstr ""
+
+#: frontend/serialize/csv.py:25
+msgid "description"
+msgstr ""
+
+#: frontend/serialize/csv.py:26
+msgid "activity-status-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:27
+msgid "start-planned"
+msgstr ""
+
+#: frontend/serialize/csv.py:28
+msgid "end-planned"
+msgstr ""
+
+#: frontend/serialize/csv.py:29
+msgid "start-actual"
+msgstr ""
+
+#: frontend/serialize/csv.py:30
+msgid "end-actual"
+msgstr ""
+
+#: frontend/serialize/csv.py:31
+msgid "participating-org (Accountable)"
+msgstr ""
+
+#: frontend/serialize/csv.py:32
+msgid "participating-org-ref (Accountable)"
+msgstr ""
+
+#: frontend/serialize/csv.py:33
+msgid "participating-org-type (Accountable)"
+msgstr ""
+
+#: frontend/serialize/csv.py:34
+msgid "participating-org-type-code (Accountable)"
+msgstr ""
+
+#: frontend/serialize/csv.py:35
+msgid "participating-org (Funding)"
+msgstr ""
+
+#: frontend/serialize/csv.py:36
+msgid "participating-org-ref (Funding)"
+msgstr ""
+
+#: frontend/serialize/csv.py:37
+msgid "participating-org-type (Funding)"
+msgstr ""
+
+#: frontend/serialize/csv.py:38
+msgid "participating-org-type-code (Funding)"
+msgstr ""
+
+#: frontend/serialize/csv.py:39
+msgid "participating-org (Extending)"
+msgstr ""
+
+#: frontend/serialize/csv.py:40
+msgid "participating-org-ref (Extending)"
+msgstr ""
+
+#: frontend/serialize/csv.py:41
+msgid "participating-org-type (Extending)"
+msgstr ""
+
+#: frontend/serialize/csv.py:42
+msgid "participating-org-type-code (Extending)"
+msgstr ""
+
+#: frontend/serialize/csv.py:43
+msgid "participating-org (Implementing)"
+msgstr ""
+
+#: frontend/serialize/csv.py:44
+msgid "participating-org-ref (Implementing)"
+msgstr ""
+
+#: frontend/serialize/csv.py:45
+msgid "participating-org-type (Implementing)"
+msgstr ""
+
+#: frontend/serialize/csv.py:46
+msgid "participating-org-type-code (Implementing)"
+msgstr ""
+
+#: frontend/serialize/csv.py:47 frontend/serialize/csv.py:60
+msgid "recipient-country-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:48 frontend/serialize/csv.py:61
+msgid "recipient-country"
+msgstr ""
+
+#: frontend/serialize/csv.py:49 frontend/serialize/csv.py:62
+msgid "recipient-country-percentage"
+msgstr ""
+
+#: frontend/serialize/csv.py:50
+msgid "sector-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:51
+msgid "sector"
+msgstr ""
+
+#: frontend/serialize/csv.py:52
+msgid "sector-percentage"
+msgstr ""
+
+#: frontend/serialize/csv.py:53
+msgid "sector-vocabulary"
+msgstr ""
+
+#: frontend/serialize/csv.py:54
+msgid "sector-vocabulary-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:55
+msgid "collaboration-type-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:56
+msgid "default-finance-type-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:57
+msgid "default-flow-type-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:58
+msgid "default-aid-type-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:59
+msgid "default-tied-status-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:63
+msgid "recipient-region-code"
+msgstr ""
+
+#: frontend/serialize/csv.py:64
+msgid "recipient-region"
+msgstr ""
+
+#: frontend/serialize/csv.py:65
+msgid "recipient-region-percentage"
+msgstr ""
+
+#: frontend/serialize/csv.py:66
+msgid "default-currency"
+msgstr ""
+
+#: frontend/serialize/csv.py:67
+msgid "currency"
+msgstr ""
+
+#: frontend/serialize/csv.py:68
+msgid "total-Commitment"
+msgstr ""
+
+#: frontend/serialize/csv.py:69
+msgid "total-Disbursement"
+msgstr ""
+
+#: frontend/serialize/csv.py:70
+msgid "total-Expenditure"
+msgstr ""
+
+#: frontend/serialize/csv.py:71
+msgid "total-Incoming Funds"
+msgstr ""
+
+#: frontend/serialize/csv.py:72
+msgid "total-Interest Repayment"
+msgstr ""
+
+#: frontend/serialize/csv.py:73
+msgid "total-Loan Repayment"
+msgstr ""
+
+#: frontend/serialize/csv.py:74
+msgid "total-Reimbursement"
+msgstr ""
+
diff --git a/iati_datastore/query_builder_source/pages/index.vue b/iati_datastore/query_builder_source/pages/index.vue
index 45adb352..fdd72b0b 100644
--- a/iati_datastore/query_builder_source/pages/index.vue
+++ b/iati_datastore/query_builder_source/pages/index.vue
@@ -594,6 +594,7 @@ export default {
         _urlQueryFilters.push(['limit', '1'])
       }
       _urlQueryFilters.push(['ref', 'qb'])
+      _urlQueryFilters.push(['locale', this.$i18n.locale])
       const _params = _urlQueryFilters.map(item => {
         return `${item[0]}=${item[1]}`
       }).join("&")
diff --git a/iati_datastore/setup.py b/iati_datastore/setup.py
index 281840d0..a871d6cb 100644
--- a/iati_datastore/setup.py
+++ b/iati_datastore/setup.py
@@ -24,6 +24,7 @@
 sentry-sdk[flask]==1.3.1
 docutils==0.17.1
 PyExcelerate==0.10.0
+Flask-Babel==2.0.0
 """
 
 tests_require = """
diff --git a/requirements.txt b/requirements.txt
old mode 100644
new mode 100755
index 51711a4e..aa7e6e11
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,9 @@ alabaster==0.7.12
 alembic==1.7.7
     # via flask-migrate
 babel==2.10.1
-    # via sphinx
+    # via
+    #   flask-babel
+    #   sphinx
 blinker==1.4
     # via sentry-sdk
 certifi==2022.5.18.1
@@ -38,12 +40,15 @@ docutils==0.17.1
 flask==1.1.2
     # via
     #   -r requirements.in
+    #   flask-babel
     #   flask-cors
     #   flask-migrate
     #   flask-rq2
     #   flask-sqlalchemy
     #   iati-datastore
     #   sentry-sdk
+flask-babel==2.0.0
+    # via iati-datastore
 flask-cors==3.0.9
     # via
     #   -r requirements.in
@@ -93,6 +98,7 @@ jinja2==3.0.3
     # via
     #   -r requirements.in
     #   flask
+    #   flask-babel
     #   pyexcelerate
     #   sphinx
 lxml==4.6.2
@@ -131,7 +137,9 @@ python-dateutil==2.8.1
     #   iati-datastore
     #   rq-scheduler
 pytz==2022.1
-    # via babel
+    # via
+    #   babel
+    #   flask-babel
 redis==3.5.3
     # via
     #   -r requirements.in
diff --git a/requirements_dev.txt b/requirements_dev.txt
old mode 100644
new mode 100755
index 67afdb2d..7008797e
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -17,6 +17,7 @@ alembic==1.7.7
 babel==2.10.1
     # via
     #   -r requirements.txt
+    #   flask-babel
     #   sphinx
 blinker==1.4
     # via
@@ -70,12 +71,17 @@ fakeredis==1.4.5
 flask==1.1.2
     # via
     #   -r requirements.txt
+    #   flask-babel
     #   flask-cors
     #   flask-migrate
     #   flask-rq2
     #   flask-sqlalchemy
     #   iati-datastore
     #   sentry-sdk
+flask-babel==2.0.0
+    # via
+    #   -r requirements.txt
+    #   iati-datastore
 flask-cors==3.0.9
     # via
     #   -r requirements.txt
@@ -134,6 +140,7 @@ jinja2==3.0.3
     # via
     #   -r requirements.txt
     #   flask
+    #   flask-babel
     #   pyexcelerate
     #   sphinx
 lxml==4.6.2
@@ -195,6 +202,7 @@ pytz==2022.1
     # via
     #   -r requirements.txt
     #   babel
+    #   flask-babel
 redis==3.5.3
     # via
     #   -r requirements.txt