Finance
How to Calculate Invoice Factoring Fees
Learn the simple math behind invoice factoring fees, upfront cash, and reserve release before you use the calculator.
Aug 9, 2026 · 5 min read
Category
Finance
Money, investing, side hustles, and building wealth — explained simply.
27 tools · 30 articles
Free Finance tools
Invoice Factoring Fee Calculator
Estimate how much cash you get from a factored invoice and the total fee in dollars.
Open the tool →Freelance Hourly Rate Calculator
Your rate is not your old salary divided by 2,080. On typical assumptions it is nearly three times that - and here is where every multiple comes from.
Open the tool →Inflation Adjusted Value Calculator
At 3%, money loses half its purchasing power in about 23 years - inside a single working life, without anything dramatic happening.
Open the tool →Invoice Late Fee Calculator
What an overdue invoice has actually accrued - and why '1.5% a month' is 18% a year, or 19.6% once it compounds.
Open the tool →Lease vs Buy Car Calculator
Compared over the same period, the two are usually much closer than they look - and the whole answer hinges on a resale value nobody knows.
Open the tool →Overtime Pay Calculator
Time-and-a-half on a fifth of your hours raises your effective rate by only 8%. The premium is smaller than it sounds.
Open the tool →Take-Home Pay Calculator
The order deductions come off decides what you keep - and a $500 pre-tax contribution only costs $390 of take-home.
Open the tool →Profit Margin vs Markup Calculator
A 50% markup is a 33% margin. Confusing the two is the most expensive arithmetic mistake in small business pricing.
Open the tool →Refinance Break-Even Calculator
How many months to recoup the closing costs - and whether a lower payment is actually costing you more over the life of the loan.
Open the tool →ROI and Payback Period Calculator
Payback ignores everything after it pays back. ROI ignores when the money arrives. You need both, and they disagree.
Open the tool →Side Hustle Hourly Profit Calculator
Revenue over hours is the flattering number. Once fees, costs, tax and unpaid time are in, it can land below minimum wage.
Open the tool →Debt Snowball vs Avalanche Calculator
Avalanche saves $866 on these numbers. Snowball clears your first debt 21 months sooner. That is the whole trade-off, in two figures.
Open the tool →Mortgage Affordability Calculator
The 28/36 rule is a lender convention, not a law — and existing debt costs you nothing until it crosses the threshold, then $13,065 of house per $100 a month.
Open the tool →Rent vs Buy Calculator
On realistic numbers the two land within a few thousand dollars over seven years — and the whole margin is an appreciation rate nobody can predict.
Open the tool →Break-Even Calculator
How many units you need to sell to cover your fixed costs - and why the contribution margin, not the price, is the number that decides it.
Open the tool →Car Loan Calculator
Your monthly payment, and the number the dealer will not lead with - what the car costs in total once the interest is counted.
Open the tool →Compound Interest Calculator
What a lump sum grows to, and the same money at simple interest beside it - because the gap between those two numbers is the whole idea.
Open the tool →Credit Card Payoff Calculator
How long a balance takes to clear at a fixed monthly payment, what it costs in interest, and how much of this month's payment never touches the balance.
Open the tool →Discount Calculator
What you actually pay after a discount - including stacked ones, which never add up to what they look like. 30% then 20% off is 44% off, not 50%.
Open the tool →Emergency Fund Calculator
How much you actually need set aside, based on what your months genuinely cost rather than a percentage of your income - and how long it takes to get there.
Open the tool →Hourly to Salary Calculator
What an hourly rate comes to over a year once unpaid time off and overtime are counted - not the hourly rate times 2,080.
Open the tool →Loan Payoff Calculator
How long a balance takes at a given payment - and the point below which it never clears at all, which is the number worth seeing first.
Open the tool →Mortgage Payment Calculator
The monthly payment, and the total interest beside it - because on a 30-year loan the interest is usually larger than you expect.
Open the tool →Retirement Savings Calculator
What regular contributions grow into - and the split between what you paid in and what the growth added, which is the number that argues for starting early.
Open the tool →Sales Tax Calculator
Both directions. Working backwards from a total is the one people get wrong — you divide by 1.08, you don't multiply by 0.92.
Open the tool →Savings Goal Calculator
Work out what you need to put aside each month to hit a savings goal by a date, with the interest your balance earns along the way doing part of the work.
Open the tool →Tip Calculator
Tip, total and the per-person split - plus the rounded-up figure, because the number you actually want is usually a whole one.
Open the tool →Finance articles
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A Lower Mortgage Payment Can Cost You More
The same rate over a longer term looks like a $242 monthly saving and costs $122,486 more. Only one of those numbers is on the offer.
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How to Charge Interest on a Late Invoice
'1.5% a month' is 18% a year — and about 19.6% if it compounds. Convert it before you write it into your terms.
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Lease or Buy? The Answer Hinges on One Guess
Move the resale value by $10,000 and the answer flips by $10,000. Every other input is contractual and certain.
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Margin and Markup Are Not the Same Number
A 50% markup is a 33.3% margin. And the mistake only ever runs one way — you charged less than you meant to.
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Payback Period and ROI Measure Different Things
Payback stops looking the moment your money is back. ROI never looks at when it arrived. Use both.
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Eight hours at time-and-a-half on a 40-hour week lifts your effective rate by 8.3%. The multiplier gets diluted.
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Pre-tax deductions come off before tax is calculated — so part of the money was never yours to keep.
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Why Your Freelance Rate Is Triple Your Old Hourly
Salary ÷ 2,080 assumes paid holiday, no admin, and an employer covering half your contributions. Remove those and the rate nearly triples.
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Debt Snowball vs Avalanche: What the Choice Actually Costs
Avalanche saves $866. Snowball clears your first debt 21 months sooner. Both of those are true, and that's the entire argument in two numbers.
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How Much House Can I Afford?
About $268,000 on a $90k income — and your existing debt costs you nothing until it crosses a threshold, then $13,065 of house per $100 a month.
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Rent vs Buy: The Answer Is an Assumption, Not a Calculation
Buying wins by $3,700 over seven years — until you set appreciation to 0%, when it loses by $65,900. The margin IS the forecast.
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How Big Should My Emergency Fund Be?
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$10,000 at 7% for 20 years becomes $40,387. The same money at simple interest becomes $24,000 — and that $16,387 gap is the entire idea.
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At $200 a month on a $5,000 balance: 35 months and $1,859 of interest. At $95 a month: never. The gap between those two is one dollar.
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How Long Will It Take to Pay Off a Loan?
Pay $75 a month on $5,000 at 18% and you'll owe $5,000 forever. Pay $76 and it clears — in 24 years, costing $17,107 in interest.
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How Mortgage Payments Are Actually Calculated
$300,000 at 6.5% over 30 years costs $382,633 in interest — 127% of what you borrowed. And your first payment puts $271 against the balance.
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How Much Should I Save Each Month?
Divide the goal by the months and you get a number that's too high. Here's the figure that accounts for what your balance earns while you're saving it.
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$541 a month on a $32,000 car. The number the conversation won't lead with is $37,461 — what it actually costs once the interest is counted.
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How Much Will My Retirement Savings Grow?
$500 a month for 30 years is $180,000 in. The projection says $812,898 — and five more years adds $375,283 for $30,000 of deposits.
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How to Calculate a Discount (And Why Stacked Ones Lie)
30% off then an extra 20% off isn't 50% off. It's 44% — because the second discount only cuts what the first one left.
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How to Calculate a Tip (In Two Seconds, In Your Head)
Move the decimal one place left. That's 10%. Everything else is addition — and four people rounding up turns a 20% tip into 25%.
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Divide by 1.08. Don't subtract 8%. On a $108 total that's the difference between $100.00 and $99.36 — and at 20% on $1,200 it's $40.
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It's fixed costs ÷ contribution margin — and the margin, not the price, is what pays the rent. A 10% discount can cost you a fifth of your sales target.
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