For i = 60,0,-1 do loop stops at 1??

for i = 60, 0, -1 do
wait(1)
if i == 0 then
Cash.Value = Cash.Value + 100
for _,v in pairs(MinWage) do
if Rank.Value == v then
Cash.Value = Cash.Value + 100
i = 60
end
end
for _,v in pairs(MedWage) do
if Rank.Value == v then
Cash.Value = Cash.Value + 200
i = 60
end
end
for _,v in pairs(MaxWage) do
if Rank.Value == v then
Cash.Value = Cash.Value + 300
i = 60
end
end
for _,v in pairs(AdminWage) do
if Rank.Value == v then
Cash.Value = Cash.Value + 500
i = 60
end
end
else
Wallet.Countdown.Text = "You get $" ..Income.Value.. " in: " ..i
end
end

It counts down all the way to 1, then it freezes. I tried changing if i == 1 then, but then it stopped at 2. Help? All variables are predefined and working.

First: Tab your code.

Second: There's no reason to check for 0 in the loop. The loop stops; that's what 0 means. Put your code after the loop.

You aren't supposed to assign to variables being iterated by for loops; Lua's documentation suggests that it's dangerous to do so -- and it doesn't have to cause any particular effect. Don't do it.

Even in the event that that made sense, you would only have to do it once -- and you would do it either before or after all of the loops, not in each iteration of each inner loop.

Instead, just use a while true do loop around the whole process.

I don't know how you have your code structured, so I don't know how you get MinWage, MedWage, etc. It would probably make more sense to get the wage rate directly, eg..

local classes = {
	NONE = 100,
	MIN = 200,
	MED = 400,
	ADMIN = 600
}

Cash.Value = Cash.Value + classes[ player.WageRate.Value ]

This would replace the 21 lines you currently have, and make it trivial to add new classes of earnings (and avoid four for loops and four if statements)