Final answer:
Seb pays $6,750 in taxes annually under the current system with a 15% flat rate. This is calculated by setting up an equation to determine his income and then applying the current tax rate to this income.
Step-by-step explanation:
To calculate the amount of tax Seb pays under the current system, we must determine what his new tax payment would be under the proposed system and then subtract the $1,500 increase from that amount. Under the new system:
- The first $12,000 of Seb's income is tax-free.
- Income above $12,000 is taxed at 25%.
Let's denote Seb's salary as $X. If Seb is paying $1,500 more under the new system, then the new tax he is paying is:
Tax under new system = Tax on (X - $12,000)
This is calculated as:
New Tax = 0.25 × (X - $12,000)
The old system taxes $X at 15%, so:
Old Tax = 0.15 × X
Given Seb pays $1,500 more, we set up the equation:
0.25 × (X - $12,000) = 0.15 × X + $1,500
Now, we solve the equation for X and then calculate the old tax:
0.25X - $3,000 = 0.15X + $1,500
0.10X = $4,500
X = $45,000
Thus, Seb's current annual tax is:
0.15 × $45,000 = $6,750
So, under the current system, Seb pays $6,750 in taxes annually.