RRSP deadline 2025: What changes before March 3

You have until March 3, 2025 to make RRSP contributions that count toward your 2024 tax return. Miss that date and your contribution sits in the account earning returns, but won't reduce what you owe this tax season.

The math matters more this year. The 2025 RRSP contribution limit jumped to $32,490 - up from $31,560 in 2024. That's an extra $930 in room for anyone who maxed out last year. But your actual limit depends on 18% of your 2023 earned income, whichever is lower.

Your 2024 tax refund depends on 2023 income

Here's what trips people up: your RRSP contribution room for 2025 gets calculated from your 2023 earned income. The CRA mailed your Notice of Assessment last spring showing exactly how much room you have. Lost it? Log into your CRA account - the number's right there.

At $80,000 in earned income from 2023, you can contribute $14,400 this year (18% of $80k). In Ontario, that contribution would generate roughly a $4,500 tax refund when you file in 2025. In Alberta, about $4,300. In Quebec, closer to $5,300 because of higher marginal rates.

TaxSplit.ca will calculate your exact refund based on your province and income.

What's actually different in 2025

The contribution limit increased to $32,490, but most people won't hit that ceiling. You need earned income of roughly $180k to max out RRSP room.

The federal tax brackets also shifted up. The 20.5% rate now starts at $57,375 instead of $55,867. Provincial brackets moved too. The practical result: if you're earning between $55k and $70k, your marginal tax rate might be slightly lower than last year. That makes the RRSP refund a bit smaller, but also means you're keeping more of each paycheque.

The deadline math

Contributing $5,000 on March 2 versus March 4 can cost you $1,500 in refund money - you'd have to wait until you file your 2025 return in spring 2026 to claim that deduction.

But there's a catch most people miss: you don't have to contribute the full amount by March 3. You can contribute part now for your 2024 return, then contribute more later in 2025 for next year's return. The room doesn't expire.

When the TFSA makes more sense

Below about $50,000 in income, the RRSP refund gets thin. The tax rate's so low that the immediate deduction isn't worth much. Better to put that money in a TFSA where withdrawals come out tax-free later.

Above $60,000, the RRSP usually wins. The refund gets meaningful, and you're likely earning more now than you'll withdraw in retirement.

Between $50k and $60k, it depends on your province and whether you expect your income to climb. Higher earners in higher-tax provinces should lean RRSP. Everyone else can go either way.

What happens if you over-contribute

The CRA charges 1% per month on excess RRSP contributions above your limit. Contribute $1,000 too much and you'll pay $10 monthly until you withdraw the excess or earn more room.

There's a $2,000 buffer, but don't count on it. Over-contribute by $2,100 and you'll pay 1% monthly on that extra $100. The penalty keeps running until the problem gets fixed.

If you're close to your limit, double-check the math before contributing. Your employer's pension plan counts toward the 18% calculation, which can reduce your RRSP room without warning.