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Calcimator

Allowance Calculator

Calculate an age-appropriate allowance amount with spending, savings, and charity splits.

About this calculator

This calculator offers two ways to arrive at an allowance amount: an age-based rule of thumb, or a custom amount you set yourself. The age-based method follows a common parenting guideline of roughly $0.50 to $1.00 per year of the child's age per week — a 10-year-old lands around $6/week under this formula — which scales allowance up gradually as kids get older and take on more financial responsibility, rather than jumping straight to a flat adult-sized amount. In Custom Amount mode, the child's age no longer affects the payout at all — you're setting the base figure directly, and the age-based formula is skipped entirely. Whichever method you use, the resulting weekly figure gets converted to your chosen payment frequency: paid as-is if weekly, doubled if biweekly, or scaled by roughly 4.33 — a month's typical week count — if monthly.

The savings and charity split percentages then divide the monthly total three ways — spending, saving, and giving — a structure commonly recommended by financial literacy educators to build the habit of allocating money across goals rather than spending everything immediately; if the two splits together would claim more than 100% of the total, the calculator scales both down proportionally so spending never goes negative. The five-year savings projection compounds the monthly savings contribution monthly at a 2% annual rate (an ordinary savings-account-style calculation), modeling a basic savings account rather than any specific real product. What this tool does not account for: chores or responsibilities tied to the allowance (some families link payment to tasks, others don't), inflation adjustments over the projection period, or regional cost-of-living differences that might make a given dollar figure feel very different in different households.

Inputs

%
%

Results

Payout Amount

$6.00

Monthly Total$25.98
Annual Total$311.76
Monthly Spending$15.59
Monthly Savings$7.79
Monthly Charity$2.60
How to Use This Calculator
  1. Enter your child's age in years.
  2. Choose the method — Age-Based (recommended), which uses age alone, or Custom Amount, which lets you set your own base figure directly.
  3. Select the payment frequency (weekly, biweekly, or monthly).
  4. Review the Payout Amount (per payment) and Annual Total.
  5. Set the Savings Split and Charity Split percentages to divide the allowance between spending, saving, and giving — if the two splits together would exceed 100%, the calculator scales them down proportionally so spending never goes negative.

How the result changes with Child's Age

Child's AgePayout Amount
5$3.50
7.5$4.75
15$8.50
18$10.00

What each input means

Child's Age
Age of the child in years.
Method
Calculation method to use.
Payment Frequency
How often the allowance is paid out.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Child's Age = 10, Method = 0, Custom Amount = 10, Payment Frequency = 0 = 6 input(s) provided
  2. Calculate Payout Amount
    Payout Amount
    6 = $6
  3. Calculate Monthly Total
    Monthly Total
    25.98 = $25.98
  4. Calculate Annual Total
    Annual Total
    311.76 = $311.76

Engine last updated . Checked against 3 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.

Frequently Asked Questions

Why does switching to Custom Amount stop the child's age from mattering?

The two methods are mutually exclusive by design — Age-Based computes the weekly amount from the child's age using the per-year-of-age formula, while Custom Amount uses whatever figure you enter directly instead, ignoring the age-based formula entirely. Age only drives the payout amount when the Age-Based method is selected; switching to Custom Amount hands you full control over the base figure.

How does the savings percentage affect what's left for spending?

Monthly total is split three ways — spending, savings, and charity — with the savings and charity percentages carved out first and spending getting whatever remains. Raising the savings percentage directly reduces the spending amount by the same dollar figure, since the monthly total itself doesn't change; it's a fixed pie being divided differently, not a bigger pie.

What happens if I set the savings and charity splits to add up to more than 100%?

The calculator scales both percentages down proportionally, preserving the ratio between them, so together they never claim more than the full monthly total and spending never goes negative. For example, the maximum settings (80% savings, 30% charity) sum to 110%, which gets scaled to about 72.7% savings and 27.3% charity, leaving nothing for spending rather than a negative figure.

Is the 5-year savings projection a guaranteed outcome?

No — it's a simple illustration that compounds your monthly savings contribution monthly at a 2% annual rate, modeling a basic interest-bearing savings account rather than tracking any specific real bank product, investment, or inflation adjustment. Treat it as a rough sense of how consistent small contributions add up over time, not a financial projection to plan around precisely.

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