The Budget Board — Interactive Monthly Budget Planner: Every Income Source, Bills Sorted by Due Date, Spending Limits With Over-Limit Flags, an Honest Leftover & a Savings-Goal Tracker (Single HTML File, Works Offline)

Most budgets fail in the same place: the bills live in one app, the spending lives in your head, and the leftover is whatever you hope is true until the day it isn't. The Budget Board is an interactive monthly budget planner, delivered as one single HTML file, that puts the whole month on one board. You get a headline strip with the four numbers that matter — leftover, total income, total fixed bills, and spent so far; an income section that takes multiple sources as separate lines, because a main job and side work do not arrive the same way; a fixed-bills section where every bill carries an amount and a due day (1–31) and the list is always displayed in due-date order, earliest first, no matter what order you type them in, with the first due bill named in the totals; a spending-categories section where each category gets a monthly limit and a spent-so-far, with the remaining amount, a percent-used bar, and — when you go over — a red over-limit flag with the exact amount over, never a quiet stop at zero; a second leftover figure that shows what remains if every category is spent to its limit, so a good-looking month cannot hide money that is already committed; and a savings-goal tracker with a name, a goal amount, saved so far, a progress bar, the percentage, and the exact amount still to find. Proof you can check from this listing alone: the board opens with a clearly labeled sample month — income of $2,850.00 (main job) plus $640.00 (side shifts), six bills totaling $1,651.00 (Rent $1,250.00 due day 1, Electric $96.00 day 8, Phone $68.00 day 12, Car insurance $142.00 day 15, Internet $60.00 day 21, Gym $35.00 day 24), and five categories with $1,120.00 of limits and $794.55 spent, including Eating out deliberately over its $180.00 limit at $196.50 so you can watch the flag work — and the board's headline leftover reads $1,044.45, which is exactly $3,490.00 − $1,651.00 − $794.55; the sample's savings goal, a $3,000.00 emergency fund with $1,140.00 saved, reads 38% with $1,860.00 to go. Every figure in the tool was verified against an independently written recomputation, matching on all scenarios including the uncomfortable ones: if your fixed bills alone exceed your income, the board prints the shortfall in red and starts the month negative, because a planner that clamps bad news to $0.00 is lying to you; save past a goal and the percentage honestly reads over 100% with the extra shown. Rows can be added, edited, and removed in every section; a Print button gives you a clean paper copy of the board; and everything saves automatically in the browser on your device — no account, no bank connection, no subscription, and the file works fully offline. One tap clears the sample for your own month, and Reset brings the sample back. What this is: a one-month-at-a-time planning board you update as the month moves. What it isn't: financial advice; it does not track individual transactions or daily spending, does not carry balances between months (print the board at month's end, then update the spent figures), and does not move, hold, or connect to any money. Do not buy it if you want an app that imports bank transactions automatically, a multi-month or multi-account system, or a daily expense diary — this is deliberately one honest page for one month. The price is $12, once, for the file, yours to keep: the sample month shows exactly what it does — it turns five scattered numbers into one leftover you can trust, minus sign included when there is one. Ideal for anyone building a first real monthly budget, households combining several incomes, people paying down fixed bills on a schedule, and anyone searching for a monthly budget planner, bill due-date organizer, spending limit tracker, leftover calculator, or savings goal tracker that works offline.