diff --git a/CHANGELOG.md b/CHANGELOG.md
index ea7a2ab..3a7a91c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## [Unreleased]
 
 Fixes:
+- Fix Bulgaria to accept TINs starting with `10` instead of `00` 🇧🇬
 - Fix Finland checks for tins ending in `P` 🇫🇮
 - Fix Denmark check for certain ranges of birth years 🇩🇰
 
diff --git a/lib/tin_valid/bulgaria_tin.rb b/lib/tin_valid/bulgaria_tin.rb
index d3d95e9..133e2a1 100644
--- a/lib/tin_valid/bulgaria_tin.rb
+++ b/lib/tin_valid/bulgaria_tin.rb
@@ -35,9 +35,17 @@ def valid?
     }x
     private_constant :MATCHER
 
+    def accepted_date?(year, month, day)
+      if year == "10"
+        valid_date?(year, month, day) || valid_date?("00", month, day)
+      else
+        valid_date?(year, month, day)
+      end
+    end
+
     # rubocop:disable Metrics/AbcSize
     # rubocop:disable Metrics/MethodLength
-    def accepted_date?(year, month, day)
+    def valid_date?(year, month, day)
       month = month.to_i
       day = day.to_i
 
diff --git a/spec/tin_valid/bulgaria_tin_spec.rb b/spec/tin_valid/bulgaria_tin_spec.rb
index bc0cd7c..c857cdc 100644
--- a/spec/tin_valid/bulgaria_tin_spec.rb
+++ b/spec/tin_valid/bulgaria_tin_spec.rb
@@ -4,6 +4,7 @@
   describe "#valid?" do
     valid_values = [
       ["7501010010", nil],
+      ["1042054007", Date.new(2000, 2, 5)],
       ["7501010010", Date.new(1975, 1, 1)],
     ]