Well i think the guide clearly says that
If your family size changes
If your family size changes during the processing of your sponsorship application, the income requirements you need to meet for each applicable year will also change,
That means dont plan for family till done with sponsorship application or make sure you counted new added members for all the years as well.
This is wrong.
here is what CIC webcite says
"
You, the sponsor (and your
co-signer, if applicable), must prove that you have
enough income to support
all the people you’ll be financially responsible for once you become a sponsor. We call this your “family size”, which is the number of people you’ll be responsible for.
To calculate your family size, include:
- yourself
- your spouse or common-law partner (who could also be your co-signer)
- your dependent children
- only include your children if they meet the definition of a dependent child
- for young children, only include them starting on the year they were born (see example 2)
- your spouse’s or partner’s dependent children
- only include children who meet the definition of a dependent child
- for young children, only include them starting on the year they were born (see example 2)
- any other person you (and your co-signer, if applicable) may have sponsored in the past, for whom you’re still financially responsible
- the parents and grandparents you want to sponsor and their dependants (spouse or partner and dependent children). You must also include
- any dependent children who won’t come to Canada with your parents or grandparents
- your parent or grandparent’s spouse or partner, even if they won’t come to Canada
- your parent or grandparents’ separated spouse
Here are examples to help you calculate your family size.
Example 2
Juan and Lise had a baby in 2017. Juan wants to sponsor his mother. Lise
won’t co-sign the application. Juan’s mother doesn’t have a spouse, partner or any dependent children.
For 2017 and 2018, Juan’s family size is 4:
- Juan
- his partner, Lise
- his baby
- his mother
For 2017 and 2018, Juan must check if he meets the income requirement for 4 persons.
For 2016, Juan’s family size was 3:
- Because Juan’s baby wasn’t born yet, the baby is not included for that year.
For 2016, Juan must check if he meets the income requirements for 3 persons."
Here is the link to the webcite
http://www.cic.gc.ca/english/helpcentre/answer.asp?qnum=1460#e2