diff --git a/README.md b/README.md
index 1895b4ed..49e5ba30 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,9 @@ branch. When this is set a diff of the coverage percentages is shown.
 ##### `filter-changed-files` (**Default: false**)
 If set to true, only changed files will be included in the report. Total percentage will still include all files.
 
+##### `excluded-files` (**Default: []**)
+A list of contains string for files without unit testing. Total percentage will be impacted.
+
 ##### `delete-old-comments` (**Default: false**)
 If set to true, old comments will be deleted before a new comment is posted
 
diff --git a/action.yml b/action.yml
index 7f66e8cf..a21d1468 100644
--- a/action.yml
+++ b/action.yml
@@ -19,6 +19,10 @@ inputs:
     description: Set to true to only comment with coverage on files changed in this commit
     required: false
     default: false
+  excluded-files:
+    description: List of files to be excluded from coverage
+    required: false
+    default: []
   delete-old-comments:
     description: Set to true to delete old Coverage Report comments
     required: false
diff --git a/dist/main.js b/dist/main.js
index 3f77464a..95fdf9db 100644
--- a/dist/main.js
+++ b/dist/main.js
@@ -22749,17 +22749,28 @@ function parse$2(data) {
 }
 
 // Get the total coverage percentage from the lcov data.
-function percentage(lcov) {
+function percentage(lcov, options) {
 	let hit = 0;
 	let found = 0;
 	for (const entry of lcov) {
-		hit += entry.lines.hit;
-		found += entry.lines.found;
+		if (shouldBeIncluded(entry.file, options)) {
+			hit += entry.lines.hit;
+			found += entry.lines.found;
+		}
 	}
 
 	return (hit / found) * 100
 }
 
+function shouldBeIncluded(fileName, options) {
+	for (let i in options.excludedFiles) {
+		if (fileName.startsWith(options.excludedFiles[i])) {
+			return false
+		}
+	}
+	return true
+}
+
 function tag(name) {
 	return function(...children) {
 		const props =
@@ -22833,10 +22844,15 @@ function filterAndNormaliseLcov(lcov, options) {
 			...file,
 			file: normalisePath(file.file),
 		}))
-		.filter(file => shouldBeIncluded(file.file, options))
+		.filter(file => shouldBeIncluded$1(file.file, options))
 }
 
-function shouldBeIncluded(fileName, options) {
+function shouldBeIncluded$1(fileName, options) {
+	for (let i in options.excludedFiles) {
+		if (fileName.startsWith(options.excludedFiles[i])) {
+			return false
+		}
+	}
 	if (!options.shouldFilterChangedFiles) {
 		return true
 	}
@@ -22966,7 +22982,7 @@ function comment(lcov, options) {
 					options.base,
 			  )} will be`
 			: `Coverage for this commit`,
-		table(tbody(tr(th(percentage(lcov).toFixed(2), "%")))),
+		table(tbody(tr(th(percentage(lcov, options).toFixed(2), "%")))),
 		"\n\n",
 		details(
 			summary(
@@ -22984,8 +23000,8 @@ function diff(lcov, before, options) {
 		return comment(lcov, options)
 	}
 
-	const pbefore = percentage(before);
-	const pafter = percentage(lcov);
+	const pbefore = percentage(before, options);
+	const pafter = percentage(lcov, options);
 	const pdiff = pafter - pbefore;
 	const plus = pdiff > 0 ? "+" : "";
 	const arrow = pdiff === 0 ? "" : pdiff < 0 ? "▾" : "▴";
@@ -23094,8 +23110,14 @@ async function main$1() {
 	const githubClient = new github_2(token);
 	const lcovFile = core$1.getInput("lcov-file") || "./coverage/lcov.info";
 	const baseFile = core$1.getInput("lcov-base");
-	const shouldFilterChangedFiles = core$1.getInput("filter-changed-files").toLowerCase() === 'true';
-	const shouldDeleteOldComments = core$1.getInput("delete-old-comments").toLowerCase() === 'true';
+	const shouldFilterChangedFiles =
+		core$1.getInput("filter-changed-files").toLowerCase() === "true";
+	const excludedFiles = core$1
+		.getInput("excluded-files")
+		.split("\n")
+		.filter(x => x !== "");
+	const shouldDeleteOldComments =
+		core$1.getInput("delete-old-comments").toLowerCase() === "true";
 	const title = core$1.getInput("title");
 
 	const raw = await fs.promises.readFile(lcovFile, "utf-8").catch(err => null);
@@ -23127,6 +23149,7 @@ async function main$1() {
 	}
 
 	options.shouldFilterChangedFiles = shouldFilterChangedFiles;
+	options.excludedFiles = excludedFiles;
 	options.title = title;
 
 	if (shouldFilterChangedFiles) {
diff --git a/src/comment.js b/src/comment.js
index 73cf3dd5..e1508c95 100644
--- a/src/comment.js
+++ b/src/comment.js
@@ -11,7 +11,7 @@ export function comment(lcov, options) {
 					options.base,
 			  )} will be`
 			: `Coverage for this commit`,
-		table(tbody(tr(th(percentage(lcov).toFixed(2), "%")))),
+		table(tbody(tr(th(percentage(lcov, options).toFixed(2), "%")))),
 		"\n\n",
 		details(
 			summary(
@@ -29,8 +29,8 @@ export function diff(lcov, before, options) {
 		return comment(lcov, options)
 	}
 
-	const pbefore = percentage(before)
-	const pafter = percentage(lcov)
+	const pbefore = percentage(before, options)
+	const pafter = percentage(lcov, options)
 	const pdiff = pafter - pbefore
 	const plus = pdiff > 0 ? "+" : ""
 	const arrow = pdiff === 0 ? "" : pdiff < 0 ? "▾" : "▴"
diff --git a/src/index.js b/src/index.js
index a2ace080..6e1d0da7 100644
--- a/src/index.js
+++ b/src/index.js
@@ -17,6 +17,10 @@ async function main() {
 	const baseFile = core.getInput("lcov-base")
 	const shouldFilterChangedFiles =
 		core.getInput("filter-changed-files").toLowerCase() === "true"
+	const excludedFiles = core
+		.getInput("excluded-files")
+		.split("\n")
+		.filter(x => x !== "")
 	const shouldDeleteOldComments =
 		core.getInput("delete-old-comments").toLowerCase() === "true"
 	const title = core.getInput("title")
@@ -50,6 +54,7 @@ async function main() {
 	}
 
 	options.shouldFilterChangedFiles = shouldFilterChangedFiles
+	options.excludedFiles = excludedFiles
 	options.title = title
 
 	if (shouldFilterChangedFiles) {
diff --git a/src/lcov.js b/src/lcov.js
index f403c0b3..46fdc946 100644
--- a/src/lcov.js
+++ b/src/lcov.js
@@ -14,13 +14,24 @@ export function parse(data) {
 }
 
 // Get the total coverage percentage from the lcov data.
-export function percentage(lcov) {
+export function percentage(lcov, options) {
 	let hit = 0
 	let found = 0
 	for (const entry of lcov) {
-		hit += entry.lines.hit
-		found += entry.lines.found
+		if (shouldBeIncluded(entry.file, options)) {
+			hit += entry.lines.hit
+			found += entry.lines.found
+		}
 	}
 
 	return (hit / found) * 100
 }
+
+function shouldBeIncluded(fileName, options) {
+	for (let i in options.excludedFiles) {
+		if (fileName.startsWith(options.excludedFiles[i])) {
+			return false
+		}
+	}
+	return true
+}
diff --git a/src/lcov_test.js b/src/lcov_test.js
index ff61f3f4..a0171fe4 100644
--- a/src/lcov_test.js
+++ b/src/lcov_test.js
@@ -110,10 +110,17 @@ test("parse should fail on invalid lcov", async function() {
 })
 
 test("percentage should calculate the correct percentage", function() {
+	const options = {
+		excludedFiles: ["lib/ignore"],
+	}
 	expect(
-		percentage([
-			{ lines: { hit: 20, found: 25 } },
-			{ lines: { hit: 10, found: 15 } },
-		]),
+		percentage(
+			[
+				{ lines: { hit: 20, found: 25 }, file: "" },
+				{ lines: { hit: 10, found: 15 }, file: "" },
+				{ lines: { hit: 0, found: 15 }, file: "lib/ignore" },
+			],
+			options,
+		),
 	).toBe(75)
 })
diff --git a/src/tabulate.js b/src/tabulate.js
index f382fa20..d0633bcc 100644
--- a/src/tabulate.js
+++ b/src/tabulate.js
@@ -44,6 +44,11 @@ function filterAndNormaliseLcov(lcov, options) {
 }
 
 function shouldBeIncluded(fileName, options) {
+	for (let i in options.excludedFiles) {
+		if (fileName.startsWith(options.excludedFiles[i])) {
+			return false
+		}
+	}
 	if (!options.shouldFilterChangedFiles) {
 		return true
 	}
diff --git a/src/tabulate_test.js b/src/tabulate_test.js
index 78038182..ff52f175 100644
--- a/src/tabulate_test.js
+++ b/src/tabulate_test.js
@@ -367,6 +367,181 @@ test("filtered tabulate should generate a correct table with only changed files"
 	expect(tabulate(data, options)).toBe(html)
 })
 
+test("filtered tabulate should generate a correct table with excluded files", function() {
+	const data = [
+		{
+			file: "/files/project/index.js",
+			functions: {
+				found: 0,
+				hit: 0,
+				details: [],
+			},
+		},
+		{
+			file: "/files/project/src/foo.js",
+			lines: {
+				found: 23,
+				hit: 21,
+				details: [
+					{
+						line: 20,
+						hit: 3,
+					},
+					{
+						line: 21,
+						hit: 3,
+					},
+					{
+						line: 22,
+						hit: 3,
+					},
+				],
+			},
+			functions: {
+				hit: 2,
+				found: 3,
+				details: [
+					{
+						name: "foo",
+						line: 19,
+					},
+					{
+						name: "bar",
+						line: 33,
+					},
+					{
+						name: "baz",
+						line: 54,
+					},
+				],
+			},
+			branches: {
+				hit: 3,
+				found: 3,
+				details: [
+					{
+						line: 21,
+						block: 0,
+						branch: 0,
+						taken: 1,
+					},
+					{
+						line: 21,
+						block: 0,
+						branch: 1,
+						taken: 2,
+					},
+					{
+						line: 37,
+						block: 1,
+						branch: 0,
+						taken: 0,
+					},
+				],
+			},
+		},
+		{
+			file: "/files/project/src/bar/baz.js",
+			lines: {
+				found: 10,
+				hit: 5,
+				details: [
+					{
+						line: 20,
+						hit: 0,
+					},
+					{
+						line: 21,
+						hit: 0,
+					},
+					{
+						line: 27,
+						hit: 0,
+					},
+				],
+			},
+			functions: {
+				hit: 2,
+				found: 3,
+				details: [
+					{
+						name: "foo",
+						line: 19,
+					},
+					{
+						name: "bar",
+						line: 33,
+					},
+					{
+						name: "baz",
+						line: 54,
+					},
+				],
+			},
+		},
+	]
+
+	const options = {
+		repository: "example/foo",
+		commit: "2e15bee6fe0df5003389aa5ec894ec0fea2d874a",
+		prefix: "/files/project/",
+		excludedFiles: ["/files/project/src/bar"],
+	}
+
+	const html = table(
+		tbody(
+			tr(
+				th("File"),
+				th("Stmts"),
+				th("Branches"),
+				th("Funcs"),
+				th("Lines"),
+				th("Uncovered Lines"),
+			),
+			tr(
+				td(
+					a(
+						{
+							href: `https://github.com/${options.repository}/blob/${options.commit}/index.js`,
+						},
+						"index.js",
+					),
+				),
+				td("100%"),
+				td("N/A"),
+				td("100%"),
+				td("N/A"),
+				td(),
+			),
+			tr(td({ colspan: 6 }, b("src"))),
+			tr(
+				td(
+					"&nbsp; &nbsp;",
+					a(
+						{
+							href: `https://github.com/${options.repository}/blob/${options.commit}/src/foo.js`,
+						},
+						"foo.js",
+					),
+				),
+				td(b("89.66%")),
+				td("100%"),
+				td(b("66.67%")),
+				td(b("91.30%")),
+				td(
+					a(
+						{
+							href: `https://github.com/${options.repository}/blob/${options.commit}/src/foo.js#L37`,
+						},
+						37,
+					),
+				),
+			),
+		),
+	)
+	expect(tabulate(data, options)).toBe(html)
+})
+
 test("filtered tabulate should fix backwards slashes in filenames", function() {
 	const data = [
 		{