diff --git a/docs/reference-guides/core-blocks.md b/docs/reference-guides/core-blocks.md
index d6332d1543e8f1..8667c9b9cfcaf1 100644
--- a/docs/reference-guides/core-blocks.md
+++ b/docs/reference-guides/core-blocks.md
@@ -266,7 +266,7 @@ Add a link to a downloadable file. ([Source](https://github.com/WordPress/gutenb
 
 -	**Name:** core/file
 -	**Category:** media
--	**Supports:** align, anchor, color (background, gradients, link, ~~text~~)
+-	**Supports:** align, anchor, color (background, gradients, link, ~~text~~), spacing (margin, padding)
 -	**Attributes:** displayPreview, downloadButtonText, fileId, fileName, href, id, previewHeight, showDownloadButton, textLinkHref, textLinkTarget
 
 ## Footnotes
diff --git a/packages/block-library/src/file/block.json b/packages/block-library/src/file/block.json
index 12edc20630d1ed..576fe34f5cf8f7 100644
--- a/packages/block-library/src/file/block.json
+++ b/packages/block-library/src/file/block.json
@@ -57,6 +57,10 @@
 	"supports": {
 		"anchor": true,
 		"align": true,
+		"spacing": {
+			"margin": true,
+			"padding": true
+		},
 		"color": {
 			"gradients": true,
 			"link": true,
diff --git a/packages/block-library/src/file/style.scss b/packages/block-library/src/file/style.scss
index e34935833e13cd..5c9a2f7be2adc6 100644
--- a/packages/block-library/src/file/style.scss
+++ b/packages/block-library/src/file/style.scss
@@ -1,4 +1,7 @@
 .wp-block-file {
+	// This block has customizable padding, border-box makes that more predictable.
+	box-sizing: border-box;
+
 	&:not(.wp-element-button) {
 		font-size: 0.8em;
 	}