Giving-capacity calculator
Enter your income, committed expenses, and retirement savings goal. The calculator shows what giving percentage your budget can actually sustain — alongside funding retirement, not instead of it. No conviction attached; that's between you and your church.
Monthly income
Monthly committed expenses
Monthly savings
Why giving capacity — not just the tithe dollar amount — matters
The tithing calculator tells you what 10% of your income equals in dollars. This calculator answers a different question: does your budget have room for that amount after you've covered housing, essentials, debt, and retirement savings?
Households that give generously for decades almost always treat giving and savings as committed items — decided in advance, automated per paycheck, not scavenged from whatever's left over at the end of the month. The order is:
- Give first. Decide the percentage. Automate the transfer.
- Save second. Retirement contributions, emergency fund. These are not optional when the goal is long-term faithfulness.
- Live on the rest. Housing, food, transportation, everything else comes from what remains.
That order means the trade-off is between giving and lifestyle, not between giving and retirement. The calculator models this: retirement savings are a committed item alongside giving, and the question is whether your lifestyle spending fits in what's left.
After the baby steps — the question Ramsey doesn't fully answer
If you've worked through Financial Peace University and completed the baby steps, you've done the foundational work: debt eliminated (except maybe the mortgage), emergency fund funded, retirement savings started at 15% of gross income.
At that point the giving question often resurfaces. Some households gave throughout the baby steps; others scaled back to accelerate debt payoff. Either way, the question becomes: with a stable, debt-free budget, what can we actually commit to?
For a household earning $85,000 gross ($5,500/month net), living in a $1,500 house, spending $1,200 on essentials, carrying no consumer debt, and saving $825/month toward retirement (15% of gross), the math is:
| Category | Monthly amount | % of income |
|---|---|---|
| Take-home | $5,500 | — |
| Housing | $1,500 | 27% |
| Essentials | $1,200 | 22% |
| Retirement | $825 | 15% (gross) |
| Committed total | $3,525 | — |
| Available (giving + variable) | $1,975 | 36% |
| At 10% giving | $550/mo | 10% |
| Remaining for variable spending | $1,425/mo | 26% |
That's a workable stewardship budget: 10% giving is sustainable, retirement is funded, and $1,425/month covers clothing, dining, entertainment, car maintenance, and vacations. The picture changes significantly at different income levels, higher housing costs, or with active debt payoff — which is exactly what the calculator above is for.
When the budget can't sustain the target — what to do
If your giving capacity falls short of your target, there are three levers:
- Start where the budget allows. If 6% is what the math supports today, commit to 6%, automate it, and plan a path to 10% as debt is retired or income grows. Consistency at a sustainable level beats sporadic giving at an aspirational one.
- Reduce committed expenses. The two largest committed items for most households are housing and debt payments. Refinancing, a debt-accelerated payoff, or a housing downsize can release meaningful capacity.
- Grow income. A raise, a career move, or a second earner returning to work changes the math more than expense cutting can for many families. A stewardship plan can model this explicitly.
A Certified Kingdom Advisor or any faith-aligned financial planner builds giving capacity into the plan as a primary goal — not as a guilt-driven aspiration, but as a modeled, achievable target tied to your debt payoff timeline and income trajectory. That's different from what most general financial planners do.
Frequently asked questions
Should I count pre-tax retirement contributions in my expenses?
Use your actual take-home income (after taxes and pre-tax deductions like 401(k)). Then, under retirement savings, enter only any additional after-tax contributions like a Roth IRA. This gives you an accurate picture of what you're actually working with each month.
My employer matches my 401(k) — does that affect giving capacity?
Employer matches don't change your cash flow, so they don't affect the calculator's result. They do increase your total retirement savings rate, which may inform how much you feel is enough in the retirement savings field.
Should I tithe on the income before or after taxes?
That's a conviction question — one our tithing calculator covers in detail, showing the math both ways on gross and net. The giving-capacity calculator uses take-home income as its basis because that's the budget you're actually allocating.
Is a donor-advised fund useful for managing large giving?
Yes. If your giving capacity supports it, a donor-advised fund (DAF) lets you contribute assets in a high-income year (taking the deduction then), and distribute to charities over time. A biblical stewardship plan often integrates a DAF alongside regular giving — an advisor can help you model whether the math works for your situation.
Want giving built into your financial plan — not bolted on after?
Get matched with a fee-only fiduciary who serves Christian families: tithing, generosity planning, biblically responsible investing, and retirement — all coordinated. Free, no obligation.