diff --git a/lib/commands/device/deactivate.ts b/lib/commands/device/deactivate.ts
new file mode 100644
index 00000000..9fb66600
--- /dev/null
+++ b/lib/commands/device/deactivate.ts
@@ -0,0 +1,86 @@
+/**
+ * @license
+ * Copyright 2020 Balena Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { flags } from '@oclif/command';
+import type { IArg } from '@oclif/parser/lib/args';
+import Command from '../../command';
+import * as cf from '../../utils/common-flags';
+import { getBalenaSdk, stripIndent } from '../../utils/lazy';
+
+interface FlagsDef {
+	yes: boolean;
+	help: void;
+}
+
+interface ArgsDef {
+	uuid: string;
+}
+
+export default class DeviceDeactivateCmd extends Command {
+	public static description = stripIndent`
+		Deactivate a device.
+
+		Deactivate a device.
+
+		Note this command asks for confirmation interactively.
+		You can avoid this by passing the \`--yes\` option.
+		`;
+	public static examples = [
+		'$ balena device deactivate 7cf02a6',
+		'$ balena device deactivate 7cf02a6 --yes',
+	];
+
+	public static args: Array<IArg<any>> = [
+		{
+			name: 'uuid',
+			description: 'the UUID of the device to be deactivated',
+			required: true,
+		},
+	];
+
+	public static usage = 'device deactivate <uuid>';
+
+	public static flags: flags.Input<FlagsDef> = {
+		yes: cf.yes,
+		help: cf.help,
+	};
+
+	public static authenticated = true;
+
+	public async run() {
+		const { args: params, flags: options } = this.parse<FlagsDef, ArgsDef>(
+			DeviceDeactivateCmd,
+		);
+
+		const balena = getBalenaSdk();
+		const patterns = await import('../../utils/patterns');
+
+		const uuid = params.uuid;
+		const deactivationWarning = `
+
+Warning! Deactivating a device will charge a fee equivalent to the
+normal monthly cost for the device (e.g. $1 for an essentials device);
+the device will not be charged again until it comes online.
+
+Are you sure you want to deactivate device ${uuid} ?`;
+
+		// Confirm
+		await patterns.confirm(options.yes, deactivationWarning);
+		// Deactivate
+		await balena.models.device.deactivate(uuid);
+	}
+}
diff --git a/lib/errors.ts b/lib/errors.ts
index be780296..5a8696b0 100644
--- a/lib/errors.ts
+++ b/lib/errors.ts
@@ -144,6 +144,7 @@ const messages: {
 
 const EXPECTED_ERROR_REGEXES = [
 	/^BalenaAmbiguousApplication/, // balena-sdk
+	/^BalenaAmbiguousDevice/, // balena-sdk
 	/^BalenaApplicationNotFound/, // balena-sdk
 	/^BalenaDeviceNotFound/, // balena-sdk
 	/^BalenaExpiredToken/, // balena-sdk