QuickBooks does not offer 24-hour customer service. Customer support is available from Monday to Friday during business hours. However, QuickBooks does provide a variety of resources to help users troubleshoot common issues outside of customer service hours. These resources include online community forums, help articles, video tutorials, and a chatbot feature that can assist with basic inquiries. Additionally, QuickBooks offers different levels of customer support depending on the subscription plan, with higher-tier plans often including priority support and access to dedicated account managers. Overall, while QuickBooks may not have 24-hour customer service, they strive to provide ample support options to assist users with their accounting needs.