# Additional Funds Needed (AFN) Calculator

URL: https://speedycalculator.com/calculators/finance/additional-funds-needed/
Last updated: 2026-10-25

> The additional funds needed calculator estimates how much outside financing a company needs to support sales growth, using the percentage-of-sales method: the rise in assets minus the spontaneous rise in liabilities and the increase in retained earnings.

## Inputs

- Current sales
- Projected sales
- Assets tied to sales
- Spontaneous liabilities (payables, accruals)
- Net profit margin (%)
- Dividend payout ratio (%)

## Results

- Required increase in assets
- Spontaneous increase in liabilities
- Increase in retained earnings
- Additional funds needed
- Sales growth

## Formula

```
AFN = (A ÷ S₀) × ΔS − (L ÷ S₀) × ΔS − PM × S₁ × b
ΔS = S₁ − S₀; b = retention ratio = 1 − payout ratio
```

## Explanation

When sales grow, a company usually needs more inventory, receivables and equipment. Part of that is funded automatically by suppliers (accounts payable) and accrued expenses, and part by retained profit. Whatever is left must come from new debt or equity.

### How to use the Additional Funds Needed

- **Current sales**
- **Projected sales**
- **Assets tied to sales**
- **Spontaneous liabilities (payables, accruals)**
- **Net profit margin**
- **Dividend payout ratio**

Results update as you type, and every field accepts the units shown in its menu.

### How it works

Enter last year's sales, next year's sales, the assets and spontaneous liabilities that grow with sales, the profit margin and the payout ratio.

### Tips

- Use figures for the same period (a month, a quarter or a year) for every input so ratios compare like with like.
- Track the metric over time – the trend usually tells you more than a single value.
- Compare your result with industry benchmarks, which vary a lot between sectors.
- Treat the result as a starting point for a decision, then check the assumptions behind each input.

### Common mistakes to avoid

- Mixing monthly and yearly numbers in the same calculation.
- Using revenue where the formula needs profit (or the other way round).
- Forgetting hidden costs such as taxes, fees, overheads or your own time.

### Inputs explained

FieldWhat to enterCurrent salesAmount in your currencyProjected salesAmount in your currencyAssets tied to salesAmount in your currencySpontaneous liabilities (payables, accruals)Amount in your currencyNet profit marginIn %Dividend payout ratioIn %

### What each result means

- **Required increase in assets** = [Assets tied to sales]÷[Current sales]×([Projected sales] - [Current sales])
- **Spontaneous increase in liabilities** = [Spontaneous liabilities (payables, accruals)]÷[Current sales]×([Projected sales] - [Current sales])
- **Increase in retained earnings** = [Net profit margin]÷100×[Projected sales]×(1 - [Dividend payout ratio]÷100)
- **Additional funds needed** = [Required increase in assets] - [Spontaneous increase in liabilities] - [Increase in retained earnings]
- **Sales growth** = ([Projected sales]÷[Current sales] - 1)×100

### Example values

How the main result changes when **Current sales** changes and everything else stays at the example values above:

Current salesAdditional funds needed1,000,0001,275,0001,500,000525,0002,000,000150,0002,500,000-75,0003,000,000-225,0004,000,000-412,500

## Worked example

Inputs — Current sales: $2,000,000; Projected sales: $2,500,000; Assets tied to sales: $1,200,000; Spontaneous liabilities (payables, accruals): $300,000; Net profit margin: 5 %; Dividend payout ratio: 40 %.

Results — Required increase in assets = $300,000.00; Spontaneous increase in liabilities = $75,000.00; Increase in retained earnings = $75,000.00; **Additional funds needed = $150,000.00**; Sales growth = 25 %.

## FAQ

**What does a negative AFN mean?**
The company generates more funds than its growth needs – it has surplus financing.

**How can a company reduce AFN?**
Raise the profit margin, cut the payout ratio, or use assets more efficiently.

**What are spontaneous liabilities?**
Liabilities that grow automatically with sales, such as accounts payable and accrued wages.

**What formula does the Additional Funds Needed use?**
AFN = (A ÷ S₀) × ΔS − (L ÷ S₀) × ΔS − PM × S₁ × b.


## Sources

- [Corporate Finance Institute – financial ratios](https://corporatefinanceinstitute.com/)