Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Total retained by chapters
$325,000
National office share
$175,000
Average per chapter
$16,250
Chapter revenue per member
$81.25
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How to use this
- 1Enter total dues/program revenue collected ($).
- 2Enter national office share (%).
- 3Enter number of local chapters.
- 4Enter total members across all chapters.
- 5Read your total retained by chapters on the right — it updates as you type.
- 6Hit Share to keep the scenario or send it to someone.
About this calculator
Federated nonprofits and associations with local chapters need a revenue split formula that's consistent, transparent, and covers what each level actually does, national typically handling brand, insurance, national advocacy, and shared technology while chapters handle direct member programming. This calculator takes total membership or program revenue collected, applies a national share percentage, and shows the resulting split along with what that leaves each individual chapter on a per-member basis, so you can sanity-check whether the split leaves local chapters enough to actually run programming or whether it's structurally starving them while national retains too much.
Worked example
Using the values the calculator loads with:
Inputs
- Total dues/program revenue collected: 500000 $
- National office share: 35 %
- Number of local chapters: 20
- Total members across all chapters: 4000
Results
- Total retained by chapters: $325,000
- National office share: $175,000
- Average per chapter: $16,250
- Chapter revenue per member: $81.25
What each field means
Inputs
- Total dues/program revenue collected ($)
- The total dues/program revenue collected used in the calculation, measured in $. Starts at 500000 $ so you have a working example on load.
- National office share (%)
- The national office share used in the calculation, measured in %. Starts at 35 % so you have a working example on load. Accepted range: 0–100 %.
- Number of local chapters
- The number of local chapters used in the calculation. Starts at 20 so you have a working example on load.
- Total members across all chapters
- The total members across all chapters used in the calculation. Starts at 4000 so you have a working example on load.
Results
- Total retained by chapters
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- National office share
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Average per chapter
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Chapter revenue per member
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
What's a typical national/chapter split?
It varies widely by sector, but 25-40% retained by national with the remainder flowing to chapters is common among federated membership associations, adjusted based on how much direct member-facing programming national provides versus purely back-office and brand functions.
Should the split be based on where dues are collected or where members are located?
Location-based splitting (each member's home chapter gets its share) is more common and transparent than collection-point splitting, which can create disputes if dues are processed centrally but service delivery happens locally through a different chapter.
How do we handle chapters with very different sizes?
A flat per-chapter split ignores that a 500-member chapter has vastly different program costs than a 20-member chapter. Per-member splitting is usually fairer and is what this calculator's per-member output reflects, use it alongside the flat average, not instead of it.
What if small chapters can't cover basic operations on their share?
Many federated structures add a minimum chapter subsidy or shared services model (national-provided insurance, templates, bulk-purchased software) specifically so struggling small chapters aren't structurally set up to fail on a pure percentage split alone.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Chapter Revenue Share Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/chapter-revenue-share
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/chapter-revenue-share" target="_blank" rel="noopener">Chapter Revenue Share Calculator — RevenueLab</a> (2026).</p>
Source: [Chapter Revenue Share Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/chapter-revenue-share) (2026).