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I'm not quite sure if I understand correctly your question.
But the associated plan to your account would include all your forms.
This means that the features and limitations that you see here: http://www.jotform.com/pricing are counted for all your forms. For example, the premium plan comes with 1,000 monthly submissions which mean that every submission made in any of your forms is deducted from that limit.
I hope this answers your questions.
Let us know if your need more clarification on this.
Yes that's it
Feel free to contact us again, should you need assistance.