Slack offers a free version. If you're looking to use Slack for yourself or a small remote team, then the free version may be enough for you to get started. You could eventually upgrade to the Standard Plan, which Slack recommends for small and medium-sized businesses. The Standard Plan costs $6.67 per person per month when billed annually. It features an unlimited message archive, unlimited apps, and a secure workspace with Slack Connect. If your business grows or you're looking to use more of Slack's advanced administrative tools, like data exports for all messages, then you can consider upgrading to a Plus or Enterprise Grid membership. Also, remember that whatever you pay for your membership is a tax write-off.