Buy Now vs Save and Pay Cash Calculator

How fast you expect this item's price to change each year while you save, up or down. Over the ten years to August 2026 durable goods rose 1.50 percent a year, used cars 2.45, furniture 1.88 and major appliances 0.75, while televisions fell 9.30 percent a year and computers 1.43. A single year can be far from the ten-year average. It is also the top of the table.

Optional. What you would put aside each month instead of making loan payments. Leave it blank and it reads as the loan payment, so both paths spend exactly the same each month, which is the fair comparison. Enter more to save faster; enter less and buying now has to draw on other savings each month to meet its payments, which the status line points out, unless saving never reaches the price, when that warning takes its place.

Optional. The sales tax charged on the price, as a combined state and local rate. Leave it blank if the price already includes tax, and it reads as nothing. Buying now pays it on today's price and finances it with the price; saving first pays it on the later price. The population-weighted average combined rate was 7.53 percent in mid 2026.

Optional. The combined income tax rate on the interest the savings earn. Leave it blank and the interest is untaxed. It reduces the yield before the monthly rate is worked out, so a 4 percent APY taxed at 25 percent earns 3 percent a year.

The annual percentage yield the money set aside would earn, as a bank quotes it. An APY already includes compounding, so it is turned into a monthly rate that compounds back to exactly this figure over a year. The FDIC's national average for savings accounts was 0.37 percent in September 2026, and the top rate on Bankrate's list of 22 September 2026 was 4.20 percent, so the account moves the answer more than most other entries.

Optional. What doing without the item costs you in each month you wait, such as renting one, paying for a substitute, or a laundromat in place of a washer. Leave it blank and it reads as nothing, which means the value of having the item sooner is not priced at all. It comes out of the monthly budget while saving, so it slows the saving. No published figure for it was found, so its range is this model's own judgment.

Optional. Money you have already put aside for this item. Leave it blank if there is none, and it reads as nothing. Buying now puts it down as a down payment, so less is financed; saving first starts from it. If it already covers the price with tax, both paths buy today and the status line says so.

The annual percentage rate on the loan, card or pay-over-time plan offered for the purchase, as the offer states it. Each month is charged one twelfth of it. Card rates run near 22 percent, new store cards near 33 and a two-year personal loan near 12, and a true 0 percent offer is entered as 0. It is also the side of the table.

What the item costs today, before any sales tax. Both paths buy the same item: buying now pays this price today, and saving first pays whatever it has become by the month the savings catch up with it. Enter the price the seller quotes; if that price already includes sales tax, leave the sales tax rate blank.

How many monthly payments the financing takes, in whole months. A longer term lowers the payment and raises the total interest, and because the comparison waits until the loan is paid off, it can also move the month the two paths are compared.

Today's price with the sales tax added. It is what buying now pays, partly from savings already set aside and the rest on the loan, and it is the price saving first starts chasing.

The values across the top of the table: the yearly price change, in steps of one point either side of yours and never below minus 99 percent. Read a column to hold the price change fixed and vary the APR. The middle entry is your own price change.

Machinery, and NOT an input. The same for the top of the table: Excel substitutes into it while filling the table, and the rest of the time it mirrors how the price changes a year.

Which path leaves you with more money once both own the item: saving first, buying now, or the two coming out even to within half a cent. It puts the sign of the advantage into words, and it says nothing about having the item sooner unless you entered what going without costs.

How much the price with tax moved while you saved: positive when waiting made it dearer, negative when it fell. Set it beside the loan interest to see whether waiting adds more to the price than borrowing costs.

What the item costs, with sales tax, in the month the saver buys it: today's price with tax, grown or shrunk at the yearly change for the months spent saving.

The body of the table: how far ahead saving first leaves you, in dollars, worked out again for every pair of APR and yearly price change on its two sides, with everything else as you entered it. One hundred and twenty-one cells, each one the whole comparison run again; a cell whose own pair of rates is not valid reads 0. It is a component of the table rather than a result on its own.

What the buy-now path has in savings at the comparison month: what was left of any savings after the down payment, plus whatever the monthly set-aside exceeded the loan payment by during the loan, plus the whole set-aside every month after the loan ends, all with interest. When the set-aside is less than the payment, the buyer draws the difference from other savings during the loan, which can leave this negative; saving the whole set-aside once the loan ends can bring it back above zero by the comparison month.

What the save-first path has in savings at the comparison month: what was left after paying cash for the item, plus the whole set-aside every month after the purchase, with interest. When saving never reaches the price, the purchase draws on other savings and this is negative, unless a loan that runs past the horizon the model looks ahead leaves the saver time to save it back above zero.

Machinery, and NOT an input. Excel requires the figure being tabulated to sit in the table's top-left corner, where it means nothing to a reader, so it is formatted away. It holds the advantage of saving first.

The values down the side of the table: the APR, in steps of two points either side of yours and never below nothing. Read a row to hold the APR fixed and vary the price change. The middle entry is your own APR.

Machinery, and NOT an input. Excel substitutes each value from the side of the table into this figure while it fills the table; the rest of the time it mirrors the APR on the financing offered. Change the APR itself, never this: the side of the table is derived from it, so editing the mirror moves the side while the table is being filled and the whole table comes out meaningless.

How many months the savings take to meet the price of that month, which moves at the yearly rate you entered. A count equal to the horizon the model looks ahead means saving does not reach the price within it, and the comparison then has the saver buy at the end of it with help from other savings. Zero means the savings already cover the price today.

What the item costs on the save-first path: the later price with tax, plus what going without cost, less the interest the savings earned. Like the buy-now cost it adds dollars paid at different times, so the gap between the two costs can differ from the advantage of saving first.

How much of what is already saved goes down on the purchase when buying now: all of it, up to the price with tax, so the loan covers only the rest.

What doing without the item cost over the months spent saving: the monthly figure you entered times the months to save. Nothing when you left that figure blank.

How much more the saving-first path has in savings than the buying-now path at the month the two are compared, once both own the item and both have set aside the same amount every month. Positive means waiting and paying cash leaves you better off; negative means buying now does. When saving does not reach the price within the horizon the model looks ahead, the saver is taken to buy at the end of it with help from other savings, so this is still a comparison. It is the figure the table repeats.

What the loan covers: the price with sales tax less the down payment from savings already set aside.

What the item costs on the buy-now path: the price with tax plus the loan interest. It adds dollars paid at different times, so it is a total rather than a comparison; the advantage of saving first is the comparison.

The level monthly payment that repays the amount financed over the term at the APR, the first payment a month after the purchase. With the monthly set-aside left blank, this is also what saving first puts aside each month.

Reads OK, or explains why the inputs are not valid or why the answer deserves a second look before you act on it.

The amount set aside every month on both paths: the figure you entered, or the loan payment when you left it blank. The buyer spends it on the loan payments and saves any difference; the saver saves it, less what going without costs.

The month the two paths are compared: the later of the loan's last payment and the month the saver buys. By then both own the item and neither owes anything, so comparing their savings compares like with like.

The interest the savings earned from today to the month the saver buys, after the tax on interest you entered. It is part of why saving first can come out ahead even when prices rise.

Everything the loan charges in interest over its term: the payments added up, less the amount financed. It is the price of having the item now rather than later, before counting anything the savings earn or the price does.