How do you all keep track of your inventory expenses for tax time?

I see some people using inventory lab but it’s like 70 a month, what is a good alternative to this for keeping track of all sales, inventory expenses, shipping expenses, etc, do you reccomend manually writing everything down as you go for tax time, or grabbing all the information when it’s time for taxes ( I assume that’s a pain) or do you use inventory lab or a alternative? I’m currently figuring this out as I jus started and this will be really important down the line so everything is appreciated! Thanks