Monthly Budget Planner
Map all income sources against expenses and see your monthly surplus or deficit. Identify where money is going and build a clear, actionable household or business budget.
For planning purposes only — confirm with your accountant or financial adviser.
1) Inputs & 12-Month Savings
12-Month Savings Table
| Month | Income | Housing | Transport | Food | Lifestyle | Net Savings | Cumulative Savings |
|---|
What this means for you
2) Charts
Monthly Budget Breakdown
12-Month Cumulative Savings
3) Get Expert Help
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What this budget planner does
This tool maps your monthly income against your four core spending categories — Housing, Transport, Food, and Lifestyle — to show your net monthly surplus (or deficit), a 12-month cumulative savings projection, and a visual breakdown of where your money goes. It updates instantly as you adjust any figure, making it easy to test "what if" scenarios: what happens if rent goes up €150? What if I cut the lifestyle budget by 20%?
Who it is for: Anyone who wants a quick, clear picture of their monthly finances — whether starting out, reviewing spending after a life change (new job, new home, new family member), or trying to identify where savings potential exists. It is also useful for couples aligning on a shared budget.
When to use it: Use this at the start of each month to plan, or at the end to review actual versus planned. It is also a useful starting point before using a savings goal calculator — once you know your surplus, you can determine how much of it to allocate to a specific goal.
How the calculation works
The calculation is straightforward: subtract total costs from net income to get the monthly surplus. The 12-month table assumes the same plan each month and accumulates the surplus over time.
12-Month Projection = Net Monthly Saving × 12
Savings Rate (%) = Net Monthly Saving / Income × 100
The 50/30/20 rule is a widely used budgeting framework that provides a useful benchmark:
- 50% of net income on needs (housing, utilities, food, transport, insurance)
- 30% on wants (lifestyle, dining out, entertainment, holidays)
- 20% on savings and debt repayment
Fixed vs variable expenses: Housing (rent or mortgage) and insurance are typically fixed — they do not change month to month. Transport costs may be semi-fixed (car loan) or variable (fuel, public transport). Food and lifestyle are largely variable and the most controllable. Identifying which costs are fixed helps you understand your real minimum monthly outgo and where flexibility exists.
Worked examples
| Category | Monthly Amount | % of Net Income |
|---|---|---|
| Net Income | €2,950 | 100% |
| Housing (rent + utilities) | €1,350 | 45.8% |
| Transport (Luas + Dart monthly pass) | €160 | 5.4% |
| Food (groceries + work lunches) | €400 | 13.6% |
| Lifestyle (subscriptions, socialising, gym) | €350 | 11.9% |
| Total Costs | €2,260 | 76.6% |
| Net Monthly Saving | €690 | 23.4% |
This scenario is reasonably healthy — a 23% savings rate. However, housing alone is at 46% of net income, which is above the 35% benchmark. The budget has limited resilience: a rent increase of €100/month would push the savings rate below 20%.
| Category | Monthly Amount | % of Net Income |
|---|---|---|
| Net Income | €5,900 | 100% |
| Housing (mortgage + insurance) | €1,800 | 30.5% |
| Transport (two cars + fuel) | €650 | 11% |
| Food (family groceries + dining) | €900 | 15.3% |
| Lifestyle (childcare, activities, holidays) | €1,200 | 20.3% |
| Total Costs | €4,550 | 77.1% |
| Net Monthly Saving | €1,350 | 22.9% |
A combined income of €90k supports a comfortable lifestyle with nearly €1,350/month surplus. At this rate, the family saves €16,200 per year — enough to fund a house deposit top-up, pension overpayments, or an investment portfolio. The transport spend at 11% of net income is worth reviewing — reducing to one car could free an extra €300–400/month.
| Category | Monthly Amount | % of Net Income |
|---|---|---|
| Net Income | €2,050 | 100% |
| Housing (rent + utilities) | €1,000 | 48.8% |
| Transport (car + insurance) | €220 | 10.7% |
| Food (groceries) | €380 | 18.5% |
| Lifestyle (incl. childcare top-up) | €350 | 17.1% |
| Total Costs | €1,950 | 95.1% |
| Net Monthly Saving | €100 | 4.9% |
With housing at nearly 49% of net income, this budget has very little headroom. The €100 monthly surplus is insufficient for meaningful savings. Reviewing eligibility for HAP (Housing Assistance Payment), Back to Education allowances, or One-Parent Family Tax Credit may substantially improve the position. Even a €50/month improvement in any category creates a disproportionate impact at this income level.
How to interpret your results
The budget planner gives you four instant signals:
- "Saving" badge (green): Your income exceeds your costs. Focus on whether the surplus is large enough to meet your financial goals. A surplus of less than 10% of net income is considered tight; 20%+ is a healthy position for most households.
- "Break-even" badge (amber): You are covering costs exactly but building no buffer. A single unexpected expense would push you into deficit. Immediate action to reduce costs or increase income is advisable.
- "Overspending" badge (red): Your costs exceed your income. This is sustainable only for a short period (drawing on savings or credit). Identify which category can be reduced fastest — usually Transport or Lifestyle — and make cuts.
- Cumulative savings chart: The upward slope tells you the pace of wealth accumulation. A flat or downward line means costs are eating your income. Enter a savings rate target (e.g. 20%) and work backwards to find where the cuts need to be made.
Common budgeting mistakes
- Using gross income instead of net income. Budgeting should always be done on the money that actually lands in your bank account after income tax, USC, and PRSI. Using gross income makes your budget look more comfortable than it really is.
- Forgetting irregular expenses. Annual costs (car insurance renewal, home insuranc