to formalized accounts, such as credit cards, where a monthly statement is

sent and have an ongoing liability relationship with the organization.

### Accrued Accounts

For items that are receivable or payable, this system uses `Accrued:`

hierarchy.  Under this top-level account, you'll find accounts payable,

accounts receivable, loans payable and loans receivable.

### Expense Accounts

These accounts contain any expense of the organization, and all begin with

### Income Accounts

These accounts contain any income of the organization, and all begin with

`Income:`.

### Unearned Income Accounts

`Unearned Income:` accounts are used to refer to revenue that is currently

received for services which have not yet been delivered.  The most typical

and common place an NPO encounters this type of income is for conference

registrations.  Since conference registrations arrive in advance of the

these tags can be found in the file `accounts/config/config-tags.ledger` in

this project.

### Documentation Tags

Documentation tags are tags that link to other backup documents that provide

evidence and details that justify a particular ledger entry.  The value of

the tag is a relative path name of a file elsewhere in the same repository

that documents the specific expense.  For example, an entry like this:

     2012-02-05 Office Supply Galore - Online Order

             ;Receipt: accounts/documentation/org/receipts/2012-02-05_office-supply-galore.txt

         Liabilities:Credit Card:Visa         -$35.00

shows that a purchase was made at Office Supply Galore's online store for

$35.00, and the file

`accounts/documentation/org/receipts/2012-02-05_office-supply-galore.txt`

contains the receipt from that purchase.

#### Receipt Tag

The `Receipt:` tag refers to receipt of some sort.  Typically, this is a

document that shows clear confirmation that the transaction has already

  as the state or federal government) (e.g., a unrelated business income tax

  payment).

* `USA-LLC-No-1099`, indicating that the `Entity` is an LLC, but not the type

  of LLC for which the USA requires issuing a 1099.

* `Loan`, indicating that the `Entity` is receiving these funds as a loan

  that is expected to be paid back.

#### Program Tag

The `Program` tag is used primarily to track program activity for `Income:`

initiated the income (e.g., a specific fundraising campaign) and/or what

particular program activity an expense is toward (e.g., funding travel to

some specific conference).

The Program tag is always a string with the same format as a Ledger CLI

account (primarily for use with Ledger CLI's `--pivot` and `--group-by`,

[as described later](#testing-program-success)).

### Account Type Documentation Requirements

Each account type has different documentation requirements.  Based on the

type of the account, it requires a different set of tags.

When Ledger CLI's `--pedantic` option is used, these rules are enforced by

ledger itself via the configurations found in `config-tags.ledger` and

`config-accounts.ledger`.

#### Expense Account Documentation

* One of: [`Invoice:`](#invoice-tag) [`Receipt:`](#receipt-tag), or

  [`Statement`](#statement-tag).  (The only exception to this rule: an entry

  does not need an `Invoice:`, `Receipt`, nor a `Statement` tag if the

  [payee was never charged](#never-charged-payee).)

* A [`Program:`](#program-tag) tag.

#### NEVER CHARGED Payee

The only exception to the standard tagging requirement is when the payee has

been modified to indicate that the expense was `NEVER CHARGED`.  This is an

data for the organization.

### Testing Program Success

If you use the [`Program`](#program-tag) tag effectively, you can easily test

the successes of various fundraising programs with a command like this:

    $ ledger -f accounts/books.ledger --pivot Program bal '/^Income/'

Meanwhile, using the  [`Program`](#program-tag) tag for Expenses can help

track what programs are costing with commands like these:

FIXME: example output

### Checking Integrity of a Tag

[As mentioned](#entity-tag), the `Entity:` tag is one example among many

where the value is a wide range, but since Ledger CLI isn't backed by a more

complete ERP system, it's possible during data entry for typos to make a

serious problem.  One work around to this flaw is to periodically run a

command like:

    $ ledger -f accounts/books.ledger -F '%(tag("Entity"))\n' reg|sort|uniq|less