We want to renew QB for one year. How we can do it......?

It's great to know you are renewing your QuickBooks Online subscription, kanawseeds.

We can unsubscribe from your subscription on the Billing & Subscription page on your account. Let me show you how: 

1. Go to the Gear icon.
2. Select Account and settings.
3. Click the Billing & Subscription menu.
4. Hit Renew. On the Subscription renewal page, tick the Already have an activation code? button if you already have an activation code. Then, follow the on-screen instructions. If you have a Promotion Code enter it in the text box and click the Apply button. Then, follow the on-screen instructions.
5. Enter the Billing Address details and check the Terms, Conditions checkbox. Then, click Continue/Make Payment. 
6. Select the payment option, then follow the screen instructions to make the payment.
7. Once payment is made, your company account will get renewed.

For more details about this one, see the How To Resubscribe Or Reactivate QuickBooks Online article. Feel free to visit our Manage Your Account page for more insight about managing your Intuit account.

I'd like to know how you get on after trying the steps, as I want to ensure this is resolved for you. Feel free to reply to this post and I'll get back to you. Take care always.