The tax is chosen before anyone buys
A rate that can be raised after launch is a trap. Every schedule on this page is fixed at creation and only ever runs forward.
Vol. IPlanning desk for taxed Meteora launches
A launch is a curve, a threshold and a tax. Draw all three first.
Taxwell lets you shape the price path of a bonding curve, choose how its tax behaves, price graduation at today’s SOL rate and project what the tax could pay you. Every number on this page is computed in your browser, and the maths is shown.
Open the designer See the tax modes
CA
On the curveModel · default curve, 5% tax
- SOL / USD
- —Jupiter price, live
- Default curve graduates at
- —96 SOL raised, in USD
- Solana slot
- —via read-only RPC
- Buyers pay to graduate at 5% tax
- —gross SOL, model
01
The curve designer
Price against supply sold. Change the shape, the start and end market caps, the share of supply on the curve and the tax. Drag the gold handle to move the graduation point. Hover the chart to read any point.
- SOL to graduate
- —
- Buyers pay, gross
- —
- Tax collected on the way
- —
- Graduation market cap
- —
- Price multiple
- —
- Pool price check
- —
Show the maths
Constant product. A single Meteora-style range behaves like a pool with virtual reserves. With start price p₀, end price p₁ and curve supply Sc, let r = √(p₁ / p₀). The virtual token reserve is T₀ = r·Sc / (r − 1), the price after x tokens are sold is p₀·(T₀ / (T₀ − x))², and the SOL needed to fill the curve is p₀·r·Sc.
Two ranges. Two constant-product ranges joined at the geometric mean price √(p₀·p₁). The slider sets how much of the curve supply sits in the first range.
Linear and exponential. Reference shapes: SOL to fill is the area under the price line, (p₀ + p₁)/2 · Sc for linear and (p₁ − p₀)/g with g = ln(p₁/p₀)/Sc for exponential.
Tax. A buyer pays gross G, the curve receives G·(1 − t). Filling a curve that needs Q SOL therefore takes Q / (1 − t) of buying, and the tax on those buys is Q·t / (1 − t). Sells pay tax too, which this figure leaves out.
Pool price check. If the tokens left after the curve are paired with the raised SOL, the pool opens at Q / (S − Sc). For a constant-product curve this equals the final curve price exactly when Sc / S = r / (1 + r), which is what the balance button sets.
02
How the tax behaves
Five ways to set the rate. Each panel draws the schedule and prices a buy against it, so you can see what an early sniper pays next to an ordinary buyer an hour later.
Flat
03
What the tax could pay
A volume model, not a forecast. Pick a scenario or seed day one with the real 24-hour volume of any Solana token, then set how fast volume fades and when the coin graduates into its pool.
Total tax, USD—
In SOL at today’s price—
From the curve phase—
From the pool phase—
Curve phase Pool phase Cumulative
04
Graduation, priced today
A curve’s threshold is set in SOL, so its dollar value floats with the SOL price. Enter the market cap you are aiming for in dollars and see what that means in SOL now, what buyers must put in through your tax, and how the target moves if SOL does.
- Price ratio—√(end ÷ start) for a constant-product curve
- Balanced curve sharer ÷ (1 + r) of supply
- Threshold—SOL the curve must hold
- Gross buying needed—threshold ÷ (1 − tax)
- Buys at your average size—ignores sells, which slow it down
- Time to fill—at the net inflow you set
| SOL move | SOL price | Graduation cap, USD |
|---|---|---|
| Waiting for the live SOL price… | ||
05
A tax lens on live Meteora pools
Real Solana pairs on Meteora from DexScreener, ranked by 24-hour volume. The last column asks one question: if this volume had paid your tax rate, what would one day have earned? It is a what-if on real numbers, not a claim about those pools.
| Token | Pool | Liquidity | 24h volume | Age | At your tax, 1 day | Actions |
|---|---|---|---|---|---|---|
06
What the launch itself costs
Rent is exact arithmetic: every account must hold (128 + bytes) × 6,960 lamports to be rent-exempt. Priority fees are read live from the network. Account sizes below are editable starting points, not a specific program’s layout.
Slot—
Priority fee, median—
Priority fee, 90th pct—
Non-zero samples—
| Account | Bytes | Rent, SOL |
|---|---|---|
| Compute units | — | |
| Signatures × 5,000 lamports | — | |
| Estimated total | — |
07
The life of a taxed coin
Five stages, from a name to a pool that cannot be drained. The tax is decided before the first one and is visible at every one after.
- 1
Name and shape
Ticker, image, links. Then the curve: start and end market cap, supply on the curve, and the shape between them.
- 2
Choose the tax
Flat, timed, ranged by market cap, a steep anti-sniper opening, or quoted in another asset. Set the pool tax for after graduation too.
- 3
Trade on the curve
Virtual reserves mean it trades from the first second. Every buy and sell pays the curve tax; the curve keeps the rest.
- 4
Graduate
When the curve holds its threshold, liquidity moves to a constant-product pool and the position is locked for good.
- 5
Keep collecting
The locked pool keeps charging the pool tax. The creator claims it, in SOL or the paired asset, whenever they like.
08
Four rules we design around
Numbers you can rebuild
Each figure comes with its formula. If a projection cannot be recomputed with a pencil, it does not belong on a launch page.
High tax has a price
A 50% curve tax doubles the buying needed to graduate. The designer shows that cost next to the revenue, so the trade-off is never hidden.
Nothing held, nothing signed
Taxwell reads public prices and chain state. It never asks for a key, never moves funds and never trades on your behalf.
09
Questions
Short answers. The long ones are in the maths panel under the designer.
Does Taxwell launch coins?
Not from this page. Taxwell is the planning half of a launch: design, pricing and projection. Nothing here creates a mint, sends a transaction or asks for a wallet signature.
Where does the live data come from?
SOL and paired-asset prices come from Jupiter’s public price API. Pool volumes and token volumes come from DexScreener. Slot and priority fees are read from Solana through a read-only RPC relay on this site’s own server.
Is the constant-product curve the same as Meteora’s?
A single price range with constant liquidity behaves exactly like constant product over that range, which is what the default shape models. Meteora’s bonding curve can chain up to sixteen ranges; the two-range shape shows how that changes the path. Program fees and rounding are left out.
Why does a higher tax slow graduation?
The curve only counts what is left after tax. At a 10% tax, 1 SOL of buying adds 0.9 SOL to the curve, so filling it takes about 11% more buying. At 50%, it takes twice as much.
Are the revenue projections realistic?
They are a model with three inputs you control: day-one volume, how fast it fades and when the coin graduates. Most new coins see volume collapse within days. Use the quiet scenario as your base case.
What is the pool price check?
When the curve fills, the leftover supply is paired with the raised SOL. If that pool opens at a different price from the last curve price, early pool traders get a free gap. The balance button picks the curve share that closes it.
What does the anti-sniper mode do?
It opens with a very high tax that decays to the normal rate over a short window, so bots that buy in the first seconds pay most of their size in tax. The panel shows exactly what a buy costs at each second.
Can I trust the live pool table?
The volumes and liquidity are DexScreener’s figures for real pools. The tax column is hypothetical: those pools charge their own fees, which may differ from yours.