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Compare Reserve Months for Two NYC Co-op Buildings

Two co-op buildings can ask for different information about post-closing liquidity.

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In this guide

Two co-op buildings can ask for different information about post-closing liquidity. The worksheet for this decision tracks cash after closing and reserve target and keeps the other amounts visible so you can reconcile the estimate with your own paperwork. The worked example uses fictional figures in U.S. dollars and is specific to the decision you are modeling in New York City, New York. Replace them with confirmed values for your own home purchase or mortgage decision before relying on the comparison.

Start with the documents you can reconcile

Gather the share-loan estimate, maintenance figure and application packet for the specific New York City building. Record whether the building asks for a post-closing liquidity calculation, and which obligations it wants included. A maintenance figure from a different building is not interchangeable.

An NYC apartment search can cross borough lines or switch from a co-op to a condo without much change in the asking price. That can change the documents you need and the way you compare the transaction. Write the borough, apartment type and specific building at the top of each estimate. Check the apartment’s own disclosures and the lender or attorney’s estimate for that transaction. A city program page can help identify questions about property type or assistance, while the building, lender and program administrator each confirm their own requirements.

Keep an estimate column and a confirmed column while you gather the inputs. A blank line should mean you are still waiting for a number, while a zero should mean you confirmed no amount applies. If the number is unsettled, run a range or a separate downside case instead of entering zero in a way that makes the decision appear cheaper. Record the date of each figure so it is clear when to refresh the worksheet.

Worked example with two scenarios

The reference case uses the calculator’s starting values. This guide tests what happens when you change entered reserve months from 8 to 12. All unchanged inputs are kept at their reference values, so the difference below reflects the specified changes. The table shows the inputs to compare before you interpret any of the totals.

InputReferenceThis scenario
Buyer liquid cash available ($)$145,000.00$145,000.00
Estimated cash at closing ($)$105,000.00$105,000.00
Share loan payment per month ($)$2,400.00$2,400.00
Co-op maintenance per month ($)$1,400.00$1,400.00
Other monthly costs counted ($)$250.00$250.00
Entered reserve months812
ResultReferenceThis scenario
Cash after closing and reserve target$7,600.00-$8,600.00
Monthly modeled housing obligations$4,050.00$4,050.00
Modeled reserve amount$32,400.00$48,600.00

In the reference case, cash after closing and reserve target is $7,600.00, with monthly modeled housing obligations of $4,050.00 and modeled reserve amount of $32,400.00. In the scenario for this guide it falls to -$8,600.00. Monthly modeled housing obligations is $4,050.00, and Modeled reserve amount is $48,600.00. The difference in the first row is $16,200.00 compared with the reference case. Use the secondary rows to see where that difference comes from. They represent components or additional checks, so adding every result together would combine amounts that can describe the same money from different angles.

Enter a building-specific reserve scenario for each apartment. Check the board package before assuming the same asset or payment rules apply.

Read the timing and cost rows separately

Think about the first cash event in the scenario, the date the modeled amount becomes due, and the date any offsetting receipt is usable. Write each event on its own line and include whether the value is a firm amount or a quote. The result table combines inputs for comparison, but your calendar determines when the account needs to contain the money. In particular, a positive ending balance can coexist with a shortfall earlier in the window if the inflow arrives afterward.

Before interpreting the result as savings, identify exactly what has been included in the first row. A smaller cash requirement today can accompany a later payment. A lower fee can coincide with a different interest charge. Use the row labels as written, and compare future obligations or alternative offers on a separate page when those items fall outside the selected window. That keeps a useful planning estimate from becoming a broader claim about total cost.

Check which inputs move the result

If buyer liquid cash available ($) changes from $145,000.00 to $159,500.00, cash after closing and reserve target rises to $5,900.00. In the same run, the other displayed estimates stay the same. This comparison holds every other entry constant, so it isolates that input. If your offer changes more than one amount at once, put all the revised amounts into a separate scenario and compare the complete set of results.

If estimated cash at closing ($) changes from $105,000.00 to $115,500.00, cash after closing and reserve target falls to -$19,100.00. In the same run, the other displayed estimates stay the same. This comparison holds every other entry constant, so it isolates that input. If your offer changes more than one amount at once, put all the revised amounts into a separate scenario and compare the complete set of results.

If entered reserve months changes from 12 to 13, cash after closing and reserve target falls to -$12,650.00. In the same run, modeled reserve amount becomes $52,650.00. This comparison holds every other entry constant, so it isolates that input. If your offer changes more than one amount at once, put all the revised amounts into a separate scenario and compare the complete set of results.

A small change that produces no movement in the headline result can still be worth noting. Some worksheets apply a cap or floor, and the first row may stay flat until an input crosses it. Look at the secondary amounts and test the actual limit rather than extrapolating from one small change. Save the reference settings first so that a later comparison starts from the same assumptions.

What this worksheet assumes

Uses the monthly obligations and reserve months you enter. It does not predict any building’s board approval, underwriting or definition of liquid assets.

The output uses the values you supply and rounds displayed amounts for readability. A lender, school, vendor or other party may use different dates, fees, credit treatment or rounding. If a statement and the estimate disagree, first check that the figures refer to the same dates and the same underlying balance. Then separate formula differences from missing cash items. This makes it easier to ask a targeted question about a particular line rather than trying to reconcile a single total.

Before you act on the estimate

Ask the managing agent how the building counts assets, gifts and the proposed monthly loan. Compare board requirements and lender underwriting separately. Retain cash for moving and any announced assessments outside the model unless included in the entries.

Take the scenario closest to your actual situation and put the opening cash, dated receipts and dated obligations in order. Flag any entry you cannot confirm and identify the first payment that depends on it. If a supplier, lender or other party changes that figure, update that entry first and rerun the comparison. Save both versions with the dates they were prepared so another person can see what changed and which documents support the revision.

If two alternatives are close, check what would make their order switch. For example, one alternative may depend on an unconfirmed fee or receipt, while the other depends on a date or rate you already have in writing. The sensitivity runs above help distinguish a difference that survives a small revision from one that disappears when the input moves. In your final notes, state what you verified and which assumptions still need a quote or statement.

What should I do if I only have a rough figure?

Use the rough amount as a labeled starting point and run a second version using a plausible less favorable amount. Keep the exact written quote when it arrives and replace the estimate. If the updated figure changes the headline result but leaves the earliest payment unchanged, still check that the cash is available by the relevant date. If both the amount and the date change, update the payment calendar as well as the worksheet.

When should I run the numbers again?

Recalculate when a fee, installment, credit, cost or payment date changes, and once more when you have the paperwork that will govern the decision. Use the same units and time window in both versions. If the only change is timing, keep the amount the same in your first comparison so you can see that effect separately. Compare the new result with the written figures rather than carrying forward an older estimate.

Open the NYC Co-op Board Cash Reserve Calculator to substitute your own inputs. NYC Co-op Cash Planning When Maintenance Is Higher Than Expected and How Much Cash Is Left After an NYC Co-op Closing? cover other scenarios for the same worksheet. See ACCESS NYC HomeFirst program information for local context and New York Attorney General co-op and condo buyer guide for the related disclosure or program background.

This guide is general education, not personalized financial advice. Rates, limits and rules change; confirm current figures with the lender, issuer or agency before you act. See our financial disclaimer and affiliate disclosure.

Saad Faisal

Saad builds FinToku’s calculators and writes its guides. The guides explain borrowing costs with worked examples and links to primary sources. FinToku provides education, not personalized financial advice.