A pension savings account is not quite the same thing as a regular pension insurance plan. It only applies to people who had contributions to a savings account: usually those who worked and made contributions before 2014, or those who chose the savings scheme themselves later on. If you're already retired and receiving a regular pension, that doesn't mean you have savings accumulated. Working pensioners are irrelevant here - we're talking specifically about having a savings account.
The percentage of the increase depends on the investment income that the savings account received. In 2026, the Pension Fund of Russia and NPFs (non-state pension funds) were supposed to recalculate the coefficient, and yes, this happens automatically. You don't need to submit any applications - the recalculation should be done starting August 1st for those who are already receiving payouts from their savings, or it will be factored in at the first payment.
It's best to clarify the specific percentage with the fund where your account is held - either the Pension Fund of Russia or a specific NPF. A call there will take about five minutes, and you'll find out the exact figure for your particular savings account.