I have taken one year's subscription, I was told by you it will be $430 with a 50% discount. I was charged $430 now, I would like to know the reason for this.

You paid the subscription in your trial account, correct? The discount rate does not apply to trial accounts. You have to signup for a new blank account to get the discount. Another option, purchase a new subscription through a ProAdvisor and you will get a perpetual discount. 

Hello there, jacob.

Every penny counts when running a business, and I'd like to route you to the best support available to trace this charge.

To verify the status of your account and the reason for the charge you've received, I'd recommend contacting our QuickBooks Online Support Team. Thus, they have tools to pull up your account in a safe environment and check your billing details to investigate this matter further.

Here's how: 

1. From your QuickBooks Online company, select (?) Help.
2. Click Contact Us and enter your question.
3. Choose a way to connect with us.

Additionally, if you need to modify your billing, payment, and subscription information, you can manage them directly from QBO.

Thank you for joining the Community. I'm always here to assist you with any questions about your account or subscription. Please stay safe.