Calcufast

Financial calculators

Calculate take-home pay, taxes, benefits, loans and savings. Choose your country’s rules or a personal finance tool.

By country

By topic

Calculators by country

Pick your country to quickly find salary, tax, benefits, credit, travel, and utility calculators.

United States

Finance

Form 4137 unreported tips: $10,000 → $765.00

Tips not reported to your employer owe 6.2% Social Security + 1.45% Medicare (Form 4137, IRC §3102). $10,000 → $620 + $145 = $765.00.

Finance

U.S. FUTA: $7,000 → $42 net (0.6% after 5.4% credit)

6.0% on the first $7,000; after the maximum 5.4% credit the net is 0.6% ($42). $5,000 → $30; $20,000 still $42.

Finance

Gross-up 2026: $1,500 net → $1,811.88 gross (single, biweekly)

Find the U.S. gross wages that produce a target take-home pay after 2026 federal withholding, FICA, and traditional 401(k).

Finance

Half SE tax deduction: $50,000 → $3,532.39

One-half of SECA tax is an above-the-line deduction (IRC §164(f), Form 1040 Schedule 1). $50,000 net → SECA $7,064.78 → $3,532.39.

Finance

401(k) HCE 2026: $160,000 compensation threshold

IRS highly compensated employee threshold for 2026 is $160,000.

Finance

Health FSA Limit 2026: $3,400 Cap Calculator

IRC §125(i) health FSA salary-reduction limit for 2026 is $3,400. Carryover cap $680 if the plan allows it. Not an HSA and not a dependent-care FSA.

Finance

Simplified home office: 300 sq ft → $1,500

Optional method $5 per square foot, maximum 300 sq ft (Rev. Proc. 2013-13). 300 sq ft → $1,500; 200 sq ft → $1,000. Distinct from Form 8829.

Finance

HSA 2026: $4,400 self · $5,400 at 55+

2026 HSA: $4,400 self-only or $8,750 family; +$1,000 catch-up at 55+ → $5,400 / $9,750 (Pub. 969).

Finance

Illinois income tax 2026: $52,000, 1 exemption → $2,429.21

Illinois flat 4.95% after the $2,925 Line 1 exemption (IDOR IL-700-T 2026). First-look estimate — not a completed IL-1040.