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Estimate XRP in two separate parts: the account reserve floor and the fees for the transactions you plan to submit. Query the account’s current OwnerCount, obtain the live reserve settings for the intended XRPL network, calculate base reserve + (OwnerCount × incremental owner reserve), and then add the fees shown by the network’s current fee method. The reserve and fees are not the same requirement: fees are destroyed, while reserve XRP remains part of the account balance and can be spent on fees.
The figures documented for XRPL Mainnet in the 2026 documentation check are a 1 XRP base reserve, 0.2 XRP per incremental owned object, and a 10-drop reference transaction minimum. Fee voting, network selection, load, object types, and sponsorship can change the amount you actually need, so query live values immediately before signing.
The two XRP amounts you must estimate
An XRPL account can need XRP for two independent reasons:
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|---|---|---|
| Account reserve | The network’s base reserve plus an incremental reserve for ledger objects owned by the account | It stays in the account balance as a reserve requirement. It is not a fee, although it can be consumed when paying fees and some XRP can be recovered when an account is deleted. |
| Transaction fees | The signed transaction’s Fee field, current load, transaction type, and signature or fulfillment requirements |
The fee is irrevocably destroyed; it is not paid to a validator or another party. |
The practical funding target is therefore:
reserve floor + fees for the specific transactions you expect to submit + any optional planning margin
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Do not call that combined amount “the reserve.” Only the first term is the protocol reserve. A margin is a personal choice, not a network rule.
Current Mainnet settings and the unit conversion
The XRP Ledger documentation checked in 2026 lists these Mainnet reference figures:
| Setting | Documented Mainnet value | Qualification |
|---|---|---|
| Base reserve | 1 XRP | Current documentation value at the time of the check; fee voting can change it. |
| Incremental owner reserve | 0.2 XRP per owned object | Current documentation value at the time of the check; object-specific rules and sponsorship can alter an individual account’s burden. |
| Reference transaction minimum | 10 drops (0.00001 XRP) | Before load scaling; it is not a guaranteed fee for every transaction. |
| Smallest XRP unit | 1 XRP = 1,000,000 drops | Use this conversion when API responses report integer drops. |
These values are documented settings, not a prediction of network usage. The live ledger on the network you intend to use is authoritative. Fee voting can adjust the reference fee and reserve settings; the recommended settings are described in the Fee Voting documentation and represented in the FeeSettings ledger entry.
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1. Read the account’s current OwnerCount
Call the XRPL account_info method for the account on the intended network and read account_data.OwnerCount. Use a validated ledger when the API supports an explicit ledger selector. OwnerCount counts ledger objects owned by the account, not the number of transactions it has sent, the number of XRP held, or the number of issued-token units.
Record the account address, network, ledger indicator, and the time of the response. If you create or delete an offer, trust line, escrow, ticket, or another object after this query, the count can change.
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2. Obtain live reserve settings
Query a server connected to the same XRPL network. The server_info response exposes reserve values under validated_ledger.reserve_base_xrp and validated_ledger.reserve_inc_xrp. A server_state response exposes the corresponding integer-drop fields as validated_ledger.reserve_base and validated_ledger.reserve_inc.
Do not combine a Mainnet account count with reserve values from a test network, sidechain, or another deployment. Keep the response’s ledger index and timestamp with your calculation so another person can reproduce it.
3. Calculate the reserve floor
Use the live values in one unit:
Reserve floor (XRP) = base reserve (XRP) + [OwnerCount × incremental owner reserve (XRP)]
If the server returned drops, calculate in drops first and divide by 1,000,000 at the end. For example, with the documented Mainnet values, an account with an OwnerCount of 3 has a reserve floor of 1 + (3 × 0.2) = 1.6 XRP. That is a reserve calculation only; it does not include fees for upcoming transactions.
4. Estimate each transaction fee from the live fee API
Call the XRPL fee method before signing. Its response includes current base, open-ledger, median, and minimum fee information. For an estimate intended to achieve inclusion in the current open ledger, use the reported open_ledger_fee as the planning basis, while recognizing that conditions can change between the query and submission.
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The standard reference minimum is 10 drops before load scaling. A busy server can require more, and some transaction types have their own cost rules. List every planned transaction, including retries you realistically expect, and convert each fee from drops to XRP:
Fee in XRP = fee in drops ÷ 1,000,000
5. Add the planned fees to the reserve floor
Sum the transaction-specific fees and add that sum to the reserve floor. Label the result as a practical funding estimate, not as a protocol-defined reserve. If you add extra XRP for a delayed fee response, a future object, or market volatility, identify it as your own safety margin.
Which ledger objects increase the reserve?
The reserve increment applies to owned ledger objects counted by the account. The reserve documentation identifies examples including:
- Checks
- Deposit preauthorizations
- Escrows
- NFT offers and NFT pages
- Offers
- Oracles
- Payment channels
- Signer lists
- Tickets
- Trust lines
The exact object set and counting behavior are protocol rules, so inspect the account’s current objects rather than estimating from application activity. One transaction can create several objects, and one object can later be removed, changing OwnerCount.
NFTs are counted by pages, not simply by token count
NFTs are stored in pages that can contain up to 32 NFTs. Consequently, the reserve impact depends on how many pages the account owns, not on a simplistic “one reserve increment per NFT” rule. Page packing can vary, so use the resulting ledger objects and OwnerCount for an exact account-level estimate.
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The first-two-trust-lines exception
A newly funded account that has only the base reserve can receive a special exception for its first two trust lines. This exception is narrow. Do not apply it to every trust line, to unrelated objects, or to an account that does not meet the conditions for the exception.
Sponsored reserves
XRPL sponsorship can assign reserve or fee responsibility to a sponsor. Sponsorship changes how much the individual account must fund, but it does not transfer XRP into that account. If an object or fee is sponsored, remove that responsibility from the account’s personal estimate and document who is responsible instead. The official rules are described in Sponsored Fees and Reserves.
Why 10 drops is not a universal transaction price
Ten drops is a reference minimum, not a promise that every submitted transaction will cost exactly 10 drops. The fee mechanism can scale with load, and transaction-specific rules can increase the cost.
| Transaction condition | Effect on the estimate |
|---|---|
| Ordinary transaction under normal conditions | Use the current fee response; 10 drops is only the pre-load reference floor. |
| High network load | The open-ledger fee can exceed the reference minimum. Waiting for lower load may cost less than signing immediately at a high fee. |
| Multiple signatures | Multi-signature transactions have higher costs than a single-signature equivalent. |
| EscrowFinish with a fulfillment | The cost depends on the fulfillment size, so do not multiply a generic 10-drop figure. |
| AccountDelete | Uses a higher transaction cost than the standard minimum. |
| AMMCreate | Uses a higher transaction cost than the standard minimum. |
| Key-reset transaction | Some key-reset transactions have zero transaction cost under the protocol rules. |
Use the transaction-cost rules for the specific type, then verify the fee returned by the API. The official explanation of destruction is explicit: “The transaction cost is not paid to any party: the XRP is irrevocably destroyed.” See Transaction Cost.
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Worked estimates
Example A: an empty Mainnet account
Assume the account is on Mainnet, has OwnerCount = 0, and you plan one ordinary transaction. Using the documented 2026 Mainnet settings, the reserve floor is 1 XRP. If the live fee response shows 10 drops for the planned transaction, the fee is 0.00001 XRP, so the arithmetic funding estimate is 1.00001 XRP. This does not guarantee inclusion if load rises before submission.
Example B: five owned objects and three ordinary transactions
With the same documented settings and OwnerCount = 5, the reserve floor is 1 + (5 × 0.2) = 2 XRP. If the current fee method reports 12 drops for each of three ordinary transactions, the fee budget is 36 drops, or 0.000036 XRP. The practical estimate before any optional margin is 2.000036 XRP.
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Example C: an NFT holder
Suppose an account holds enough NFTs to occupy several NFT pages. Do not multiply the NFT count by 0.2 XRP. First obtain the account’s actual OwnerCount after the pages exist, then apply the live incremental reserve. Add the fees for minting, offers, transfers, or page-management transactions using their current transaction-specific costs.
Example D: a mixed transaction plan
For a plan containing ordinary payments, a multi-signature transaction, and an AccountDelete, create three separate fee lines. Use the open-ledger estimate for ordinary payments, the multi-signature rule for the signed transaction, and the AccountDelete cost for the deletion. Adding three copies of 10 drops would understate the budget.
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How reserve and fees interact after funding
The reserve is not a frozen deposit. The XRP Ledger documentation states: “The XRP reserve is not dormant, however. You can use your reserves to pay transaction fees.” Read the full explanation on the Reserves page.
Because fees are destroyed, paying a fee can reduce the balance below the reserve floor. An account below its reserve remains on-ledger, but it cannot send XRP to another account or create new reserve-increasing objects until its balance is sufficient again. It can still submit transactions that do not perform those actions if it has enough XRP to pay the transaction fee.
Deleting an eligible ledger object can reduce the account’s reserve requirement. Deleting the account itself can recover some XRP, subject to the AccountDelete rules and its higher transaction cost. Treat recovered XRP as an outcome of a valid ledger operation, not as a reason to underfund the account before the operation is confirmed.
Signing, submission, and fee timing
- Query
account_infoand recordOwnerCountfrom a validated ledger. - Query
server_infoorserver_stateon the target network and record the reserve fields. - Query
feeand select a fee basis appropriate to your goal, normally the current open-ledger value when prompt inclusion matters. - Build the transaction with the intended
Feefield and calculate the reserve plus fee budget. - Sign only after checking that the fee and reserve assumptions are still current.
- Submit and monitor the result. If load changes materially before signing, query the fee again.
Once a transaction is signed, changing its Fee field invalidates the signature. Never edit the fee in a signed blob and assume the signature remains valid. During unusually high load, waiting and obtaining a fresh fee quote can be preferable to paying an unexpectedly high inclusion fee.
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When two calculators produce different answers, compare the inputs rather than only the totals:
| Input to compare | Question to ask |
|---|---|
| Network and timestamp | Were the reserve values queried on the same network and at roughly the same time? |
OwnerCount |
Did both estimates use the same account state and count the same objects? |
| Transaction set | Are the number of transactions, signature counts, and special transaction types identical? |
| Fee basis | Did one estimate use the base or median fee while the other used the current open-ledger fee? |
| Sponsorship | Is a sponsor covering an object reserve or fee in one estimate? |
| Safety margin | Does one total include an optional buffer that the other excludes? |
Practical checklist before you fund or sign
- Confirm the account address and target XRPL network.
- Read
OwnerCountfromaccount_info; do not infer it from transaction count or token balances. - Read reserve settings from the same network using
server_infoorserver_state. - Keep XRP and drops units consistent and convert with 1,000,000 drops per XRP.
- Use the
feemethod and identify whether your estimate uses base, median, minimum, or open-ledger fee data. - Apply special costs for multi-signature, EscrowFinish, AccountDelete, AMMCreate, and any other applicable transaction type.
- Check NFT pages and other ledger objects instead of assuming one reserve increment per NFT or per transaction.
- Apply the first-two-trust-lines exception only when the account meets its specific conditions.
- Account for sponsorship explicitly; it changes responsibility, not the account’s XRP balance.
- Re-query immediately before signing if load, reserve settings, or account objects may have changed.
- Separate the protocol reserve from any optional personal safety margin in your records and user interface.
What a current estimate can and cannot promise
A calculation based on live ledger values can tell you the reserve floor for the account state you queried and a fee budget for the transactions you described. It cannot guarantee a future fee, because load and fee voting can change. It also cannot predict an object count that your application has not yet created. For a reliable operational estimate, query the account and network, calculate from those responses, sign promptly, and refresh the fee when conditions change.
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