← Research lab91 · Synthetic group settlement study

Net settlement kitne transfers bacha sakta hai?

Paying back every expense separately creates a new obligation each time. Net settlement combines the same ledger into final positive and negative balances, then matches payers until everyone reaches zero.

Synthetic simulationReviewed 16 October 2026Seed 20261016
95.2%

average transfer reduction

Across all four tested group sizes.

4,000

synthetic groups

1,000 deterministic runs per group size.

120,000

generated expenses

30 expenses in every modelled group.

Results

Model ka output.

Group sizeImmediate repaymentsNet transfersReduction
4 people

62.9 average

3.0 average

95.2%

6 people

105.1 average

5.0 average

95.2%

8 people

147.1 average

7.0 average

95.2%

12 people

230.8 average

11.0 average

95.2%

Sample

Exactly kya analyse hua?

4,000 generated groups: 1,000 runs each for 4, 6, 8 and 12 people, with 30 expenses per group.

Method
  1. 01

    Use deterministic seed 20261016.

  2. 02

    Choose one payer and a random participating subset for each expense.

  3. 03

    Count one immediate repayment for each participating non-payer.

  4. 04

    Net all balances and greedily match the largest payer and receiver until balances reach zero.

What we learned

Findings ko context mein padho.

  • Transfer reduction stayed stable because immediate obligations scaled with every expense while a final net settlement stayed near the number of people minus one.
  • The 12-person model replaced roughly 231 expense-level repayments with 11 final transfers.
  • The benefit depends on keeping one reliable ledger until the settlement checkpoint.
Quick answers

Study FAQs.

Does net settlement change how much anyone owes?

No. It changes the route and number of transfers, not each person’s final net balance.

Is 95% guaranteed for every group?

No. It is the result of this stated simulation. A group with only one expense or immediate repayments will see a different reduction.