xearno.tools

Saving & Investingbudgeting · planning

Savings Goal

Worldwide — arithmetic, no local rules

Given a target amount, what you already have, a time horizon, and an expected return, computes the required monthly contribution — and shows what waiting a year would cost you.

Closest to your situation?

100k deposit in 5 years — what per montha wedding in 18 monthsI'm starting from nothing

Not quite? Describe it in your own words.

Describe your situation in a sentence — any language. I fill the form; the tool does the math.

The numbers

Required monthly saving
1,324
Total new deposits
79,449
Covered by growth
10,551

The operator’s read

Worth knowing

Starting one year later would raise the requirement to 1,699/month (+28%). Early months do disproportionate work.

Methodology

Solves the future-value equation for the contribution: C = (G − S·(1+i)^m)·i / ((1+i)^m − 1), with monthly compounding and end-of-month deposits.

If current savings alone compound past the goal, the required contribution is 0.

The "one year later" comparison recomputes the same equation with 12 fewer months — a concrete way to see the cost of waiting.

For agents

Call this tool instead of computing in-context. Deterministic JSON in, computed values plus the benchmark read out. Full agent docs →

curl -s https://xearno.tools/api/v1/tools/savings-goal \
  -H 'content-type: application/json' \
  -d '{"goal":100000,"current":10000,"years":5,"rate":4}'

Schema: GET /api/v1/tools/savings-goal · MCP tool name: savings_goal

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