You can fill the most basic form i.e. ITR 1 and provide income from tuition fee as income from other sources.
Your understanding about the clubbing of income is absolutely correct its great that people have such awareness. However you have to check the set off method to do it correctly.
When you were knowing that there will be clubbing of income then there was no sense in directly giving such gift to your wife.
We provide service of filing return of income if you provide documents over mail.
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