Percent & VAT
Calculate percentages, discounts, and VAT (KDV) amounts. Includes preset Turkish KDV rates and full price breakdowns showing base price, tax, and total.
Key features
- Quick percentage increase and decrease calculator
- Find discount amounts and final prices instantly
- Full KDV (VAT) inclusive and exclusive breakdowns
- Pre-set common KDV rates (1%, 8%, 18%, 20%)
Guide
Percentages are the most common mathematical operation in daily life outside of basic arithmetic. Shopping discounts, tax rates, salary increases, exam scores, investment returns, loan interest, tipping, and price markups all involve percentage calculations. Despite being conceptually simple, percentage math trips people up regularly, especially when VAT (KDV in Turkish) enters the picture and you need to work backward from a tax-inclusive price to find the base amount. The fundamental percentage formula is: Result = Base multiplied by (Percentage / 100). If you want 18% of 500, the calculation is 500 x 0.18 = 90. To add a percentage to a number: Base multiplied by (1 + Percentage/100). So 500 plus 18% = 500 x 1.18 = 590. To subtract a percentage: Base multiplied by (1 - Percentage/100). So 500 minus 20% = 500 x 0.80 = 400. These three operations cover most everyday percentage needs: finding a percentage of a value, adding a percentage increase, and applying a percentage discount. The WebRecast percentage and KDV calculator provides dedicated modes for each of these operations plus specialized VAT calculations. The "X% of Y" mode handles straightforward percentage finding. The percentage increase and decrease modes handle markups and discounts with one step. The KDV modes handle both adding tax to a net price and extracting tax from a gross price. All results display instantly as you type, and the tool shows the full breakdown so you can verify every step. VAT (Katma Deger Vergisi, KDV) in Turkey uses several rates depending on the category of goods or services. The standard rate is 20% for most goods and services. The reduced rate of 10% applies to basic food products, certain medical supplies, and some services. The super-reduced rate of 1% applies to specific agricultural products, newspapers, and certain essential items. These rates change periodically through government decree, so checking the current applicable rate for your specific product or service category is important. Adding KDV to a net price is the simpler direction. If a product costs 1,000 TL before tax and the applicable KDV rate is 20%, the calculation is: KDV amount = 1,000 x 0.20 = 200 TL. Total price with KDV = 1,000 + 200 = 1,200 TL. The formula is: Gross = Net x (1 + KDV rate). This is the calculation businesses perform when setting retail prices from their cost basis. Extracting KDV from a gross (tax-inclusive) price is where most people make mistakes. If a receipt shows 1,200 TL including 20% KDV, many people incorrectly calculate 1,200 x 0.20 = 240 TL as the tax. That is wrong. The correct calculation divides the gross price by (1 + rate) to find the net price, then subtracts to find the tax. Net = 1,200 / 1.20 = 1,000 TL. KDV = 1,200 - 1,000 = 200 TL. The general formula is: Net = Gross / (1 + KDV rate), and KDV amount = Gross - Net. This reverse calculation is essential for accounting, invoice verification, and tax reporting. For freelancers and small business owners in Turkey, KDV calculations are a daily task. Every invoice must separately state the net amount, the KDV rate, the KDV amount, and the gross total. When you quote a price to a client, you need to be clear about whether it includes KDV or not. The percentage calculator's KDV mode produces the exact breakdown you need for invoicing: enter either the net price or the gross price, select the KDV rate, and get the complete three-line breakdown (net, KDV, gross) instantly. Discount calculations have their own subtleties. When a store advertises "30% off" on an item priced at 800 TL, the discount amount is 800 x 0.30 = 240 TL, and the sale price is 800 - 240 = 560 TL. But what about stacked discounts? If a store offers 20% off plus an additional 10% at checkout, the total discount is not 30%. The first discount reduces 800 to 640 (800 x 0.80). The second discount reduces 640 to 576 (640 x 0.90). The effective discount is (800 - 576) / 800 = 28%, not 30%. This is because the second discount applies to the already-reduced price. The percentage calculator helps you verify these cascading discounts by running each step individually. Percentage change calculations are essential for tracking prices, investments, and performance metrics over time. The formula is: Percentage change = ((New value - Old value) / Old value) x 100. If your electricity bill went from 850 TL to 1,020 TL, the increase is ((1020 - 850) / 850) x 100 = 20%. If a stock dropped from 145 TL to 116 TL, the decrease is ((116 - 145) / 145) x 100 = -20%. An important asymmetry to understand: a 20% decrease followed by a 20% increase does not return to the original value. 145 x 0.80 = 116, then 116 x 1.20 = 139.20. You end up 4% below where you started. This asymmetry becomes more pronounced with larger percentages. Margin versus markup is a distinction that matters in business pricing. Markup is the percentage added to cost to get the selling price: if an item costs 100 TL and you apply a 50% markup, the selling price is 150 TL. Margin is the percentage of the selling price that represents profit: in the same example, profit is 50 TL on a 150 TL price, giving a margin of 33.3%. The formulas: Selling price = Cost x (1 + Markup%), and Margin% = (Selling price - Cost) / Selling price x 100. A 50% markup equals a 33.3% margin. A 100% markup equals a 50% margin. These are not interchangeable terms, and confusing them can lead to significant pricing errors. Salary and raise calculations frequently use percentages. If your annual gross salary is 600,000 TL and you receive a 25% raise, your new salary is 600,000 x 1.25 = 750,000 TL. But the net impact on your take-home pay may differ from 25% because of Turkey's progressive income tax brackets. A higher gross salary pushes more of your income into higher tax brackets (20%, 27%, 35%, or 40%), so the net raise percentage is typically lower than the gross raise percentage. Understanding this distinction helps you negotiate more effectively. Compound percentages matter for investments and loans. Simple interest applies the percentage to the original amount only: 10,000 TL at 30% simple interest for 3 years = 10,000 + (10,000 x 0.30 x 3) = 19,000 TL. Compound interest applies the percentage to the growing balance: 10,000 x 1.30^3 = 21,970 TL. The difference of 2,970 TL comes from earning interest on your interest. Over longer periods and higher rates, compounding creates dramatically different results. For credit card debt in Turkey, where monthly interest rates of 3 to 4% are common, compounding works against you rapidly: 10,000 TL at 3.5% monthly interest becomes roughly 15,110 TL after just 12 months if unpaid. The percentage calculator is designed for speed. In a shopping scenario, you can check three different discount percentages in under 10 seconds. In an accounting context, you can verify KDV breakdowns on an invoice almost instantly. For salary negotiations, you can model different raise percentages and see the exact amounts. The tool runs entirely in your browser, requires no installation or account, and handles every common percentage scenario: finding a percentage of a number, adding or subtracting percentages, calculating percentage change between two values, and performing complete KDV breakdowns in both directions. For Turkish businesses specifically, the KDV functionality addresses a regulatory requirement. All invoices, receipts, and financial documents must show KDV separately. E-fatura (electronic invoice) systems require the net amount, KDV rate, KDV amount, and gross total as separate fields. Having a quick calculator that produces these four values from any starting point eliminates manual calculation errors that could cause problems during tax audits. The tool's preset KDV rates (1%, 10%, 20%) match the current Turkish rates, and you can enter custom rates for other countries' VAT systems. There are additional percentage scenarios that come up in real estate and loan calculations. When purchasing property in Turkey, the buyer pays a title deed transfer fee (tapu harci) of 4% of the declared property value, split equally between buyer and seller at 2% each in practice, though this is negotiable. On a property valued at 5,000,000 TL, the buyer's share of the transfer fee is 5,000,000 x 0.02 = 100,000 TL. Additionally, real estate agent commissions are typically 2% from each party on a sale, and 1 month's rent from each party on a rental. The percentage calculator lets you quickly compute these amounts for any property price. Loan and mortgage calculations rely heavily on percentage math. A home loan with a monthly interest rate of 2.5% on a principal of 2,000,000 TL generates 50,000 TL in interest in the first month alone. Over a 120-month (10-year) term, the total interest paid often exceeds the original principal. Understanding the effective annual interest rate versus the stated monthly rate is critical: a 2.5% monthly rate compounds to an effective annual rate of (1.025^12 - 1) x 100 = 34.49%, not 30% (which would be 2.5 x 12). This compounding effect means the true annual cost of borrowing is significantly higher than multiplying the monthly rate by 12. Insurance premium calculations also use percentages. Comprehensive car insurance (kasko) premiums are often quoted as a percentage of the vehicle's insured value. A 3.5% premium rate on a car valued at 800,000 TL produces an annual premium of 28,000 TL. When comparing policies, the percentage rate alone does not tell the whole story because different insurers may assess different vehicle values, apply different deductibles (expressed as percentages of the claim amount), and include different coverage levels. Use the percentage calculator to normalize these variables for fair comparison. Profit and loss calculations in business require careful percentage handling. If a retailer buys an item for 200 TL and sells it for 300 TL, the profit is 100 TL. The markup is (100/200) x 100 = 50%. The margin is (100/300) x 100 = 33.3%. If that item goes on a 20% clearance sale, the new price is 300 x 0.80 = 240 TL. The profit drops to 40 TL, and the margin drops to (40/240) x 100 = 16.7%. A 20% discount cut the margin nearly in half. This is why retail businesses track margin so carefully during promotional periods. Tip calculations at restaurants vary by country and context. In Turkey, a 10% tip is standard at sit-down restaurants. On a bill of 1,250 TL, the tip is 125 TL. In the United States, the standard range is 15 to 20%, so the same bill would warrant 187.50 to 250 TL. When splitting a bill among a group, first calculate the total with tip, then divide by the number of people. For 6 people with a 1,250 TL bill and 10% tip: (1,250 + 125) / 6 = 229.17 TL per person. Grade and exam score percentages are another everyday application. If you scored 72 out of 85 on a test, your percentage score is (72/85) x 100 = 84.7%. If you need at least 70% to pass a course and the final exam is worth 40% of your total grade, with your pre-exam average at 65%, you need to calculate the minimum exam score required. Your total grade = (pre-exam average x 0.60) + (exam score x 0.40). Setting this equal to 70: (65 x 0.60) + (exam x 0.40) = 70. Solving: 39 + (exam x 0.40) = 70, so exam x 0.40 = 31, and exam = 77.5. You need at least 77.5% on the final exam. The percentage calculator handles each step of this type of calculation. Inflation adjustments use percentage calculations to understand real purchasing power. If consumer price inflation runs at 45% over a year and your salary increased by 30%, your real purchasing power decreased. The real change formula is: ((1 + nominal change) / (1 + inflation rate) - 1) x 100 = ((1.30) / (1.45) - 1) x 100 = -10.3%. Despite a 30% nominal raise, you can afford 10.3% less than you could a year ago. This calculation is critical for salary negotiations in high-inflation environments like Turkey, where nominal raises that look generous may still represent a real pay cut. Withholding tax (stopaj) is another percentage-based calculation that Turkish freelancers and businesses encounter regularly. When a company pays a freelancer for services, the company withholds a percentage of the gross payment as income tax on behalf of the freelancer and remits it to the tax authority. The standard withholding rate for professional services is 20%. If a freelancer invoices 10,000 TL net, the gross invoice amount is 10,000 / 0.80 = 12,500 TL, with 2,500 TL withheld as stopaj. The freelancer receives 10,000 TL plus any applicable KDV. Understanding the interplay between KDV and stopaj is essential for correct invoicing, and the percentage calculator handles the math for each component independently. Currency exchange calculations are percentage-adjacent and come up frequently in international trade and travel. If the exchange rate moves from 32.50 TL per USD to 34.10 TL per USD, the Turkish lira has depreciated by ((34.10 - 32.50) / 32.50) x 100 = 4.92% against the dollar. Conversely, if you are buying dollars, the cost has increased by 4.92%. For importers, a 5% currency depreciation directly increases the cost of imported goods by approximately 5% (assuming the foreign-currency price remains stable), which then compounds with KDV to produce a higher retail price. Installment purchasing (taksit) is common in Turkey for large purchases, and understanding the effective interest rate requires percentage calculations. A product priced at 10,000 TL with 12 monthly installments of 1,050 TL totals 12,600 TL. The apparent interest rate is (12,600 - 10,000) / 10,000 x 100 = 26%. However, because you are paying gradually rather than borrowing the full amount for 12 months, the effective annual interest rate is higher than 26%. The exact effective rate requires an amortization calculation, but as a rough estimate, the effective annual rate is approximately twice the simple difference rate, so around 45 to 50% in this example. Before choosing installment purchases, compare this effective rate against alternative financing options. Break-even analysis uses percentages to determine profitability thresholds. If a product has variable costs equal to 60% of its selling price and fixed costs are 50,000 TL per month, the break-even revenue is 50,000 / (1 - 0.60) = 125,000 TL per month. At that revenue level, the 40% contribution margin exactly covers fixed costs. Revenue above 125,000 TL generates profit at a 40% margin. If you add a 10% marketing expense as a percentage of revenue, the contribution margin drops to 30%, and the break-even rises to 50,000 / 0.30 = 166,667 TL. These calculations help business owners set realistic revenue targets and evaluate the impact of cost changes. Tax deduction optimization involves understanding how different expense categories interact with tax brackets. In Turkey, certain expenses (education, health insurance premiums, charitable donations up to 5% of declared income) are deductible from the income tax base. If you are in the 27% tax bracket and make a 10,000 TL deductible donation, you save 10,000 x 0.27 = 2,700 TL in income tax. The effective cost of the donation is 7,300 TL. The percentage calculator helps you evaluate the after-tax cost of deductible expenses by applying your marginal tax rate to the deduction amount. Return on investment (ROI) is expressed as a percentage and is one of the most important metrics in business and personal finance. The formula is: ROI = ((Current value - Initial investment) / Initial investment) x 100. If you bought a property for 2,000,000 TL and it is now worth 3,200,000 TL, your ROI is ((3,200,000 - 2,000,000) / 2,000,000) x 100 = 60%. If that appreciation happened over 3 years, the annualized return is approximately (1.60)^(1/3) - 1 = 17.0% per year. Comparing ROI across different investments requires annualizing the returns because a 60% return over 3 years is very different from a 60% return over 10 years. The percentage calculator handles the individual calculations, and you can annualize by applying the appropriate root formula. The percentage and KDV calculator is one of those tools you reach for multiple times per day once you realize it is available. From checking a restaurant discount to verifying an invoice's KDV breakdown to modeling a salary negotiation, percentage calculations are everywhere. Having an instant, reliable tool that runs in your browser eliminates mental math errors and speeds up every calculation involving percentages, discounts, taxes, and rates.
Frequently asked questions
How is KDV calculated?
It's simple: Price × (1 + rate). I handle all the math so you don't have to!
Can I calculate any percentage?
Yes. Use the "X% of Y" mode for any custom calculation.
