FairNest

Monthly joint account planner

Decide a fair monthly contribution plan in under a minute. Add contributors, pick a split method, and review impact on each person.

Set up your plan

Tip: Use the example first to see how equal vs proportional split changes personal money left.

Fairness guardrails

Set optional salary-based limits for each person's contribution in both split modes.

Min: 0%

Max: 100%

Contributors

Plan results

No plan yet. Load the example or enter your own values, then click Calculate contributions.

How the split works

Equal split

Everyone contributes the same amount: (target - current balance) / number of contributors.

Proportional split

Each person contributes based on salary share, so higher earners contribute more while percentages stay aligned.