How to Apply for the CPP Retirement Pension by Mail (Form ISP1000) in 2026

• The start age is the real decision. Start at 60 and your pension is permanently lower. Wait to 70 and it is permanently higher. You make this choice once and live with it.
• Two ways to apply. Online through your My Service Canada Account, or the paper form ISP1000 by mail. The paper form cannot be filed electronically.
• Apply ahead of time. CPP does not start automatically. Send your application in the months before you want your first payment.
• Worked in Quebec? Different plan. Quebec has its own Quebec Pension Plan run by Retraite Québec, with its own application.
• Where it goes matters. Paper applications go to the Service Canada office for your province or territory. See where to mail your CPP application.
• Keep proof without a post office trip. A dated copy of your signed ISP1000 plus a dated PostPal mailing confirmation is a clean record.

You can start your CPP at 60, or wait until 70 and collect a permanently bigger cheque for the rest of your life. That single choice is the most important thing on the whole application, and most people spend more time on the form than on the decision. Do the reverse.

Sixty-five is the standard age. Start there and you get the full pension you earned, no adjustment either way.

Take it early, at 60, and the amount drops by 0.6% for every month before 65, which works out to a maximum reduction of 36% if you start the day you turn 60. Delay past 65 and it climbs the other way, by 0.7% for every month you wait, up to a 42% increase at age 70. Waiting past 70 buys you nothing more, so 70 is the ceiling.

These adjustments are permanent. The reduction or the boost is baked into your monthly amount for life. There is no clever rule that resets it later.

So who takes it early? People who need the income now, people in poor health, people who would rather have the money in hand than bet on living into their late eighties. Who waits? People who are still working, have other income to live on, and want the largest guaranteed cheque they can lock in. There is no universally right answer. There is a right answer for your situation, and it depends mostly on your other income and how long you expect to need the money. Service Canada lays out the math on when to start your retirement pension.

One more thing. CPP does not arrive on its own. You have to apply, and you generally apply in the months before you want it to start. Sort the age first, then fill out the form.

Service Canada takes the application two ways. Pick one:

• Online: sign in to your My Service Canada Account (MSCA) and submit there. It is the fastest route if your account is already set up.
• By paper: complete the Application for a Canada Pension Plan Retirement Pension (ISP1000), sign it, and mail it to Service Canada.

Here is the part people get tripped up by. The ISP1000 cannot be submitted electronically. There is no upload box, no scan-and-send. You print it, sign it by hand, and put it in the mail. The signature is what makes it a real application.

Some people have to use the paper form. If you are applying from outside Canada, or your situation involves certain past CPP disability or children's benefits, Service Canada directs you to the paper application rather than the online one. The apply page spells out exactly who must mail it in. If that is you, paper is not a preference, it is the route.

And plenty of people simply prefer paper. No account to set up, no password reset, a clean copy of exactly what you sent. The rest of this guide is about doing it by mail.

The ISP1000 asks for the basics about you and a few decisions you have to make on the page. Have these in front of you before you start:

Fill in the start-date box deliberately. That is where your 60/65/70 decision actually lands. Get the date right and the rest is mostly transcribing what you already know.

Send copies of any supporting documents the form asks for, not originals, and keep your originals. You can grab the current ISP1000 from the CPP apply page.

If you worked in Quebec, stop and check this before you fill out anything. Quebec runs its own plan, the Quebec Pension Plan (QPP), administered by Retraite Québec. People who earned their income in Quebec generally pay into QPP instead of CPP, and they apply to Retraite Québec, not Service Canada.

The two plans are built to work together, so a worker who spent part of their career in Quebec and part elsewhere is covered, and the plans coordinate to make sure you get a pension. But the application still goes to one administrator. Where you live now, and where you contributed, decide which one.

Rough rule of thumb. If you currently reside in Quebec, you apply through Retraite Québec and the ISP1000 is the wrong form. If you live in any other province or territory, you are in CPP territory and this guide is for you. If you have split your working life between Quebec and the rest of Canada, contact Service Canada or Retraite Québec to confirm which one handles your file. It is a two-minute call that saves you mailing the right form to the wrong place.

The paper ISP1000 does not go to one central PO box. It goes to the Service Canada office that handles your province or territory, generally based on where you live. Send it to the wrong office and it has to be redirected, which eats into the lead time you wanted before your start date.

We keep a verified, current address so you are not guessing. See where to mail your CPP application and copy it exactly as listed.

You will not need to leave home to send it. Type or upload your signed ISP1000 at postpal.ca/send. We print it, fold it into an envelope, and put it in the mail through Canada Post the next business day for about $6 flat. A dated mailing confirmation lands in your inbox. No printer, no envelopes, no trip out.

Apply early. This is the part that bites people who leave it to the last minute. Your pension does not backdate itself to your birthday, so if you want payments flowing the month you turn 65, the application should be in well before then. Service Canada's general advice is to apply in the months ahead of your chosen start date.

Once your application is in, online applicants can generally expect a decision within about 28 days. A mailed paper application adds the time it spends travelling to the office and being keyed in by hand, so build in a buffer. Treat the paper route as slower by its nature, not slower because anything went wrong.

After a decision, you can check the status of your application through your My Service Canada Account if you have one. When approved, payments are deposited on a set monthly schedule. Setting up direct deposit on the form is the easiest way to make sure the money simply shows up.

The headline: the form is quick, the mailing is quick, but the lead time is on you. Give yourself a few months and you will never be sweating a start date.

You want a record of what you sent and when, especially with a start date riding on it. Two things, kept together, do the job:

• A dated copy of your signed ISP1000 and anything you enclosed. Save a PDF or keep a paper duplicate.
• Your PostPal mailing confirmation. When we mail your application, you get a dated email showing the day it went out. Keep it with your copy.

Put those two side by side and you can show you applied, and when, without standing in a line for it. Stash them somewhere you can find them fast. If a timing question ever comes up with Service Canada, that paired record is what you point to.

Should I take CPP at 60 or wait?

It depends on your other income and how long you expect to need the money. Take it at 60 and your pension is permanently reduced, by up to 36%. Wait toward 70 and it is permanently increased, by up to 42% at age 70. People who need income now or are in poor health often take it early. People still working with other income often wait to lock in the larger amount. There is no single right answer, only the right one for your situation.

Can I still work while collecting CPP?

Yes. You can work and receive your CPP retirement pension at the same time. If you are under 70 and still working, you may keep contributing, which can add to your future benefits. Service Canada explains the details on its CPP pages.

Can I submit the ISP1000 online?

No. The paper ISP1000 cannot be submitted electronically. You print it, sign it by hand, and mail it. If you want a fully online application, that is the separate route through your My Service Canada Account.

How long does a mailed application take?

Online applications generally get a decision within about 28 days. A mailed paper application adds the time it spends in transit and being entered by hand, so allow extra. The bigger factor is your own lead time, so apply in the months before you want payments to start.

I worked in Quebec. Do I still use this form?

Maybe not. Quebec has its own Quebec Pension Plan, run by Retraite Québec, with its own application. If you live in Quebec you generally apply there, not to Service Canada. If your career was split between Quebec and elsewhere, contact either office to confirm which one handles your file before you mail anything.

Does CPP start automatically at 65?

No. You have to apply. CPP does not begin on its own when you turn 65, which is exactly why applying a few months ahead matters.

Do I need a printer or a post office?

No. Upload your signed ISP1000 to PostPal and we print it, envelope it, and mail it through Canada Post the next business day for about $6 flat, then email you a dated confirmation. You handle the signing; we handle the sending.

The application itself is short. The decision underneath it is not. Settle your start age first, because 60 versus 65 versus 70 follows you for the rest of your life, then fill out the ISP1000, sign it, pick a start date you actually want, and mail it to the right Service Canada office a few months early. Keep a dated copy and your mailing confirmation, and you are done.

When the form is signed, we handle the rest. Upload your ISP1000 and PostPal prints it, envelopes it, and mails it through Canada Post the next business day for about $6 flat, then emails you a dated confirmation for your records. No printer, no trip out.

Mail your CPP application with PostPal →

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