Farmergeorge said "When I had a proper job ( prior to self employment) Dad warned me about working too much overtime and he was right. Whatever you do the tax man gets a chunk of it in the end.
The only real way when employed to get ahead of tax a little is to maximize your tax free investment allocation each year.
Two things in life are certain , death and taxes and that’s a fact!
Get advice from a good accountant is the best thing anyone can do. "
this could not be further from the truth.
your income tax is not paid based on whether your earnings were from regular time, over time, vacation, sick time etc. it's just dollar for dollar. you may pay more tax off that cheque because some of your income ends up in a higher bracket, but at the end of the year your income is totalled and you are taxed according to your entire income as a lump sum.
also, tax free investment allocations are a great way to not pay tax on investment income - but that's the only place it's saving you money, is the taxes you don't end up owing on the interest you earn on your own investment. TFSA's also have nothing to do with employment or income.
to the OP - if you don't want to hire an accountant to answer some of these questions you can use the government's PDOC to run some scenario's for yourself on your different options. many companies require the use of the "bonus method of tax" on any lump sum payments outside of regular earnings, so you can ask your employer if they use that - it's an option to factor that into the PDOC calculation as well.