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The Phoenix-Hecht Postal Survey is an objective, carefully monitored,
statistically validated measurement of total float in a remittance
collection system. Total float, which is the sum of mail and availability,
provides the best measurement of a service providers remittance
collection performance. Postal Survey results are calculated using
statistical techniques designed to simulate the corporate lockbox
experience, remove aberrations that might occur during an individual
survey, and depict trends. The trend validation is important to
corporations who make lockbox site decisions based upon a consistent
pattern of performance.
The Postal Survey is conducted in April and October and published
in July and January respectively. During the ten business days of
each survey, envelopes are mailed to all participating lockbox sites
from mailing locations which include all major population and business
centers and U.S. Postal Service Sectional Center Facilities. The
envelopes, which are uniquely coded to identify the mailing location,
date and destination, are mailed in time to make the last mail pickup
of the day by the citys main Post Office. These end of the
business day mailings simulate corporate mailing practices.
The U.S. Postal Service handles and transports the survey envelopes.
After pickup at their receiving destination, envelopes are taken
to the service providers lockbox processing area, where they
are time and date stamped by lockbox personnel. Mail times are measured
in whole days. The whole day measurement shows the calendar days
from day of mailing to banking day of ledger credit. The whole day
measurement starts when the item is mailed. The whole day measurement
is consistent with what corporations observe as mail time: the number
of calendar days between the mailing date and the ledger day of
deposit. Arrival patterns are used to determine the impact of mail
arrival on the providers availability schedule.
Postal Survey availability, the second component of total float,
is a statistical measurement of expected availability, based on
the service providers published availability schedule and
its mail arrival pattern and deposit times. A service providers
availability schedule is integrated with its mail arrival pattern
and deposit times to determine which items are received in time
to make the availability deadlines. Checks are assumed to be drawn
on banks local to the sending zip code, and weights are assigned
to routing transit numbers based upon observed remittance sample
data. The expected availability for a sending zip/receiving site
pair is calculated by weighting individual local routing numbers
and multiplying the published availability for these points by the
probability of mail being received in the lockbox during the period
that the availability is in effect.
Neither mail nor availability float alone is sufficient for comparing
lockbox performance between providers. Total float, representing
the number of calendar days between the mailing date and the date
funds are made available, measures lockbox float as the corporate
cash manager sees it.
REPORTS
Postal Survey Reports provide vital information that enhances
the performance measurement of your lockbox. The Postal Survey,
an independent third-party measurement of lockbox performance, is
recognized as the industry standard by corporations.
- Your lockbox providers mail, availability and total float
times, along with the change in total float from its previous
survey, are provided. (Negative change indicates lower float
i.e., better performance.)
- You can use these reports to compare relative collection times
from your most important customer areas, reassign customers to
your most efficient collection point, and monitor total float
trends at each of your lockboxes.
POSTAL SURVEY TERMINOLOGY
The Phoenix-Hecht Postal Survey measures and reports float
times for lockbox remittances. Measuring the total time between
the mailing of a check and the availability of funds to the depositor,
the Postal Survey, used in conjunction with the Collection Model™
and actual remittances received by a company, closely represents
the mail and availability float experienced by corporations.
Familiarity with the terms listed below will help you understand
the Postal Survey explanation which follows.
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Sending
Zip Codes
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170
mailing locations, representing the largest population centers
from each state
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Receiving
Locations
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Lockbox
sites where Postal Survey mail is received; individual banks,
city averages, and networks are represented
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Elapsed
Hours Mail Time
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The
number of hours from the time of mailing until receipt in
the lockbox area
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Whole
Days Mail Time
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Calendar
days from the day of mailing until the ledger day of deposit
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Availability
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Average
availability in calendar days from the day of ledger credit
to the day of funds availability for locally disbursed checks
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Locally
Disbursed Checks
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Checks
drawn on banks that are geographically close to the sending
zip code
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Total
Float
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Sum
of calendar days mail plus calendar days availability
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Smoothing
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A
weighted average of data
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Arrival
Pattern
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Distribution
of receipt times of lockbox items throughout the day and
week
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City
Average
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Average
results for the most competitive banks within a city
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CALCULATIONS
Postal Survey mail and availability float calculations are designed
to reflect the corporate lockbox collection experience. The data
incorporates smoothing and weighting procedures which remove aberrations
and confirm trends. Float is measured on a calendar day basis. In
order to understand how mail and availability float are calculated,
it is important to keep the following four points in mind:
- A minimum lockbox processing time of four hours is assumed
- Ledger credit deadline is considered to be four hours prior
to the last availability deadline of the ledger day
- A maximum of three deposits are assumed to be made each day,
including weekends
- Checks are assumed to be drawn on banks local to the sending
zip
These assumptions only apply to Postal Survey reports. Companies
needing a more accurate depiction of total float in their system
should request output from the Collection Model.
The Postal Surveys total float measurement provides the best
picture of a corporations lockbox collection float experience.
Alone, neither mail float nor availability float is sufficient for
comparing lockbox performance between sites. Total float, representing
the number of calendar days between the mailing date and the date
funds are made available, is the only valid basis for comparison.

ELAPSED DAYS OF MAIL
Because elapsed days of mail are calculated with respect to the
individual receiving processors end of ledger day, you cannot
determine elapsed days by dividing the elapsed hours figure by 24.
Elapsed days of mail are calculated from the time of mailing until
the business day of deposit.
The business
day of deposit can be determined by using the date and time of
receipt of an envelope and by applying the processing assumptions
of a minimum of four hours processing and a maximum of three daily
deposits. Each participant in the survey specifies the times at
which deposits are to be made daily. The time and date of receipt
dictates the next available deposit time, allowing for the minimum
four hour processing assumption. For items deposited during the
weekend, the business day of deposit is Monday.
The chart below depicts the calculation of elapsed days of
mail for the same envelopes shown in the chart for elapsed hours
of mail.

In the chart above, the time-stamp of the envelope is shown in
parenthesis. Using the processing assumptions given, note that the
items mailed both Mondays and the first Tuesday are deposited the
next day at 11:00 a.m. (No items are received four hours prior to
the 5:00 a.m. deposit time.) Tuesdays week two envelope is
received at 8:00 p.m., which is not in time to make Wednesdays
last deposit at 10:00 p.m. The item is deposited at 5:00 a.m. Thursday
and receives two days mail time. Wednesdays item is deposited
the next day at the 11:00 a.m. deposit. Thursdays week one
envelope is deposited Friday at 11:00, but week twos envelope
would not be deposited until the 10:00 p.m. (ledger credit) deposit.
Both items mailed Friday are deposited at the Monday 5:00 a.m. deposit.
Daily weights adjust for corporate mailing patterns.
POSTAL SURVEY AVAILABILITY
An availability schedule states the availability granted for an
item drawn on a particular endpoint that is received by a particular
time. Since the lockbox customer has no control over the deposit
times for items received and processed, the availability schedule
alone is inadequate for modeling purposes. The statistical measurement
necessary for modeling requires that an availability schedule be
used in conjunction with the distribution of lockbox items, known
as the deposit pattern. This measurement is called "expected
availability".
Deposit patterns indicate how much mail can be processed and
deposited by each availability deadline using the processing assumptions
of the survey. A deposit pattern is computed from the time- and
date-stamps provided on a participants Postal Survey envelopes.
Phoenix-Hecht computes a non-local and a local deposit pattern for
each participant. A local deposit pattern is computed because the
Post Office tends to sort local mail at a different time than other
mail. The local deposit pattern uses the six or seven sending zip
code geographically closest to a receiving location.
Postal Survey Availability is the average expected availability
for items mailed from the sending zip and deposited in the lockbox
bank. The availability is a weighted average of the receiving
sites availability for the four and eight-digit routing
transit numbers which are local to the sending zip.
A more accurate calculation of a companys expected availability
can be obtained by using an actual sample of the companys
remittances and The Collection Model.
TOTAL FLOAT
Total float is the sum of calendar days mail float plus
calendar days availability float. The examples below illustrate
treatment of mail time and availability for a bank with a ledger
credit deadline of 5:00 p.m. and three weekday and one weekend deposit
times. The 10:00 a.m. immediate availability deadline occurs before
the ledger credit deadline.

The above example illustrates two days of mail float and immediate
availability. The item is received during Wednesdays banking
day, prior to the 5:00 p.m. ledger credit deadline and in time for
the 10:00 a.m. deposit which has an immediate availability deadline
quotation. Note that all items deposited at 10:00 a.m. are granted
the stated availability as of the deposit time. For example, if
this 10:00 a.m. deposit contained items drawn on endpoints where
the immediate availability deadline is later in the day, those items
are granted zero day availability because they were deposited before
the deadline.

This example illustrates two days of mail float and one day
of availability. The item was received during Wednesdays banking
day, but too late for the 10:00 a.m. availability deadline. It therefore
receives one-day availability.
WEEKEND IMPACT
When an item is received after the end of the banking day
Friday, the weekend days are included as mail time because the item
will be given ledger credit on Monday. An item will be granted availability
based on any weekend deadline it meets. The examples below illustrate
the calendar day impact of weekends on mail and availability.

The above example illustrates two days of mail float and three
days of availability. This item is received during Fridays
banking day and makes the one-day availability deadline (equivalent
to three calendar days).

This example shows five days of mail and one day of availability.
Since the item arrives on Sunday, it will be deposited on Monday
and is therefore assigned five days of mail time. Arriving after
Saturdays immediate credit deadline, the item is assigned
one days availability on Monday at 5:00 p.m. Good funds will
be available for this item on Tuesday.

The above examples illustrate five days of mail and immediate
availability. Mail time is five days because the items arrived after
the close of Fridays banking day and are therefore deposited
on Monday. Availability is immediate because the items arrived prior
to Saturdays immediate credit deadline, and funds will therefore
be available on Monday.
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