The IRS will only send your tax return transcript to the address listed on your last tax return. If your mail isn’t being forwarded to your new address, or you don’t want to risk strangers getting ahold of your tax info, you should notify the IRS of your new address right away. Use Form 8822, Change of Address for this. You may need to wait 4–6 weeks for the new address to show up before sending the 4506 T form.