The $417 a month you don't have to find.

Put three goals into almost any savings calculator and it will do the same thing: work out each one on its own, add up the monthly contributions, compare that against what you have, and hand you a number. Very often the number is one you can't produce. You are short $417 a month, it says, so either save more, want less, or wait longer. Most people, quite reasonably, close the tab. The trouble is that the demand is usually wrong — not by a little, and not because the arithmetic slipped.

01 — The assumption nobody states
That every goal you have runs forever

Model a goal in isolation and you have to assume its contribution continues for the whole projection. There's no alternative: the calculator is looking at one goal, so it has no idea that anything else exists, let alone that anything else might end.

That assumption is invisible and almost always false. Goals finish. The trip gets paid for. The car gets bought. The deposit gets handed over. And on the day a goal finishes, the money that was feeding it doesn't disappear — it becomes the most available money in your entire budget, already committed, already automatic, already invisible to your day-to-day spending.

A tool that can't see that will keep charging you for the trip long after you've taken it. Then it turns to your third goal, finds nothing funding it, and asks you to conjure $417 a month out of a budget it has just finished double-counting.

02 — The same household, both ways
Three goals, $800 a month, thirty-six months

Here is a deliberately plain example — no investment growth, so every figure can be checked on paper. A household has $800 a month committed across three goals:

• A trip — $4,000, funded at $400 a month. Paid for in ten months.
• A car — $10,000, funded at $400 a month. Paid for in twenty-five months.
• Savings — $15,000 in three years, funded, for now, by nothing at all.

Projected the usual way, the third goal is a disaster. Nothing is going into it, so it reaches $0, and closing a $15,000 gap over 36 months requires $416.67 a month the household does not have. That is the honest output of the standard method, and it is completely useless.

Now let the projection know that goals finish.

In month 10 the trip is done and its $400 moves to savings. In month 25 the car is done and its $400 follows, so savings runs at $800 a month for the final stretch. Fifteen months at $400 and eleven at $800 comes to $14,800.

The household is not $417 a month short. It is $200 short in total — about $5.56 a month, or one slightly cheaper month of anything. Same budget, same goals, same dates. The only thing that changed is that the projection stopped pretending the trip lasts forever.

03 — Where the freed money actually goes
To the goal that can use it, not simply the next in line

There's a detail in that example worth pulling out, because it's the difference between a rule of thumb and a projection you can act on.

When the trip finishes, its $400 does not go to the car — even though the car is the next goal by priority. The car's own $400 a month already lands it on exactly $10,000 by month 25. It needs nothing. So the money falls past it to savings, which can actually use it.

That's the rule: freed money is offered to each remaining goal in your own priority order, capped at what that goal still needs. Priority decides who gets asked first; need decides how much anyone takes. Without the cap, a high-priority goal would hoard money it has no use for and the projection would quietly overfund one goal while another starved — which is exactly the failure the whole exercise is meant to fix.

One more boundary, since it's the obvious next question: only money you have already committed to a goal moves this way. Boscelli never reaches into money you haven't allocated and assigns it for you. Deciding where uncommitted money goes is your call, and there's a separate surface for making it. A projection's job is to tell you what your current decisions produce — not to make new ones on your behalf.

04 — The catch, stated plainly
This models a decision, not a law of physics

Every projection rests on assumptions, and a tool that hides them is selling something. So here is the one this rests on, in the open: it assumes you actually redirect the money.

If the trip ends in month 10 and that $400 quietly becomes restaurants, weekend spending, and a slightly larger grocery bill, then the pessimistic number was right all along and savings really does reach nothing. Freed capacity is not automatic. It's a decision you have to make, in the month it becomes available, probably without anyone reminding you — which is precisely why it so rarely gets made.

What the sequenced projection changes is that the decision becomes visible before you get there. You can see, today, that in month 10 a $400-a-month choice is going to land in your lap, and what it's worth if you make it well. That's a very different position from arriving at month 10 with a finished goal, a vague sense of extra room, and no plan for it.

Because the assumption matters that much, Boscelli never quotes the friendlier number on its own. Every goal carries both figures — what it reaches if freed money gets redirected, and what it reaches if it doesn't — so the gap between them is always something you can see rather than something the tool pockets on your behalf. The full method is written up on our methodology page, including the compounding convention and where the projection deliberately refuses to guess.

05 — Why this is the whole argument for planning by goal
A single pot can't tell you this

It's worth noticing what made the better answer possible. It wasn't a cleverer formula — the arithmetic is fifteen times $400 plus eleven times $800, and you can do it in your head. It's that the plan knew there were three separate goals, in an order, each with its own finish line.

Track your money as one number going up and this whole class of question is unaskable. A single balance can't tell you that something finished in month 10, because it has no idea anything was ever separate. It can only tell you the total is larger, which was never the thing you wanted to know. Name the goals, date them, and order them, and the plan can suddenly answer a question no scoreboard can: what happens next, and what does it free up?

That's also the honest limit of it. Sequencing doesn't create money, and nothing here is a recommendation about what you should do with yours. It just stops a projection asking you for money you already have — which, on the evidence of most people's first run through a savings calculator, is the single most common way these tools produce a number that makes someone give up.

Boscelli is a personal planning tool, not a registered investment adviser. Projections are estimates for planning purposes only and do not constitute financial advice. The worked example uses a 0% expected return so the arithmetic can be verified by hand; every figure in it is produced by the same projection engine the product runs, and is asserted in that engine's test suite. Sequenced projections assume freed contributions are actually redirected — an assumption stated on each goal and on our methodology page. Descriptions of how goal calculators generally behave are characterizations of a common approach, not claims about any specific product.