Withdrew from Canada RRIF - reporting NR4 (code 26) on US taxes

It depends on what the exchange rate was in 2023. I have researched historical rates for 2023 and the average is around .72. Let's calculate. 

1. Income                       $135,000 X  .72 = $97200 
2. Standard Deduction                                 27,700
3. Taxable Income                                       $69,500
4. Tax liability                                                $7,903  This is approximate but could vary depending on the exchange rate

Now since you paid the withholding to Canada, you will need to claim a foreign tax credit for the taxes you paid to Canada. 

To report the income, go to:  

1. Log into your account
2. Select Wages and income
3. Less Common income
4. Miscellaneous Income, 1099-A, 1099>start
5. Scroll to the bottom of the page to Other Reportable Income
6. Other taxable income, answer yes
7. Then give a brief description of the income and the amount listed. Here list this as RRIF income and the amount.

As far as the Foreign Tax Credit, i don't have enough space in this post to go through the complete steps but I will get you started.  You can reply back if you need additional help in completing this section.

1. Go to Federal
2. Deductions and credits
3. Estimate and other taxes paid
4. Foreign Tax Credit>start or revisit
5. When it asks We just need to check if you have any uncommon situations indicate I paid foreign taxes on income I earned while working in another country. 
6. At some point in the interview, it will ask if you wish to take a deduction or a credit.  You will wish to take the credit as this should erase your entire tax liability unless there is other income items to report in your return.
7. Foreign Taxes paid should be $33,750 X .72= $24,300.  This is approximate but could vary according to the exchange rate you use.

Thank you for your reply. Is there a reason to use 1099-A rather than plugging it in as a 1099-R?

You aren't reporting this as 1099A income. You are reporting this as other income precisely in the manner I prescribed . You can enter this on a 1099 R but unless you have specific details about the issuer of the RRIF such as the EIN, it's best not to report on the 1099R because if it isn't reported correctly, you won't be able to efile your return.

IRS is not concerned so much how this is reported. It is only concerned that you report the income.